Docs: Proofreading for grammar and spelling

Minor cases with confusion over `it's`, `its`, and the possessive.

Author: AThousandShips

doc/classes/Camera3D.xml

@@ -184,8 +184,8 @@
 			The distance to the far culling boundary for this camera relative to its local Z axis. Higher values allow the camera to see further away, while decreasing [member far] can improve performance if it results in objects being partially or fully culled.
 		</member>
 		<member name="fov" type="float" setter="set_fov" getter="get_fov" default="75.0">
-			The camera's field of view angle (in degrees). Only applicable in perspective mode. Since [member keep_aspect] locks one axis, [member fov] sets the other axis' field of view angle.
-			For reference, the default vertical field of view value ([code]75.0[/code]) is equivalent to a horizontal FOV of:
+			The camera's field of view (also known as FOV), as an angle in degrees. Only applicable in perspective mode. Since [member keep_aspect] locks one axis, this property sets the field of view on the other axis.
+			For reference, the default angle for the vertical FOV ([code]75.0[/code]) is equivalent to a horizontal FOV of:
 			- ~91.31 degrees in a 4:3 viewport
 			- ~101.67 degrees in a 16:10 viewport
 			- ~107.51 degrees in a 16:9 viewport

doc/classes/CameraAttributesPhysical.xml

@@ -5,7 +5,7 @@
 	</brief_description>
 	<description>
 		[CameraAttributesPhysical] is used to set rendering settings based on a physically-based camera's settings. It is responsible for exposure, auto-exposure, and depth of field.
-		When used in a [WorldEnvironment] it provides default settings for exposure, auto-exposure, and depth of field that will be used by all cameras without their own [CameraAttributes], including the editor camera. When used in a [Camera3D] it will override any [CameraAttributes] set in the [WorldEnvironment] and will override the [Camera3D]s [member Camera3D.far], [member Camera3D.near], [member Camera3D.fov], and [member Camera3D.keep_aspect] properties. When used in [VoxelGI] or [LightmapGI], only the exposure settings will be used.
+		When used in a [WorldEnvironment] it provides default settings for exposure, auto-exposure, and depth of field that will be used by all cameras without their own [CameraAttributes], including the editor camera. When used in a [Camera3D] it will override any [CameraAttributes] set in the [WorldEnvironment] and will override the [Camera3D]'s [member Camera3D.far], [member Camera3D.near], [member Camera3D.fov], and [member Camera3D.keep_aspect] properties. When used in [VoxelGI] or [LightmapGI], only the exposure settings will be used.
 		The default settings are intended for use in an outdoor environment, tips for settings for use in an indoor environment can be found in each setting's documentation.
 		[b]Note:[/b] Depth of field blur is only supported in the Forward+ and Mobile rendering methods, not Compatibility.
 	</description>

doc/classes/CanvasItem.xml

@@ -500,7 +500,7 @@
 		<method name="get_global_transform_with_canvas" qualifiers="const">
 			<return type="Transform2D" />
 			<description>
-				Returns the transform from the local coordinate system of this [CanvasItem] to the [Viewport]s coordinate system.
+				Returns the transform from the local coordinate system of this [CanvasItem] to the [Viewport]'s coordinate system.
 			</description>
 		</method>
 		<method name="get_instance_shader_parameter" qualifiers="const">

doc/classes/CanvasLayer.xml

@@ -24,7 +24,7 @@
 		<method name="get_final_transform" qualifiers="const">
 			<return type="Transform2D" />
 			<description>
-				Returns the transform from the [CanvasLayer]s coordinate system to the [Viewport]s coordinate system.
+				Returns the transform from the [CanvasLayer]'s coordinate system to the [Viewport]'s coordinate system.
 			</description>
 		</method>
 		<method name="hide">

doc/classes/EditorImportPlugin.xml

@@ -238,10 +238,10 @@
 			<param index="3" name="platform_variants" type="String[]" />
 			<param index="4" name="gen_files" type="String[]" />
 			<description>
-				Imports [param source_file] with the import [param options] specified. Should return [constant @GlobalScope.OK] if the import is successful, other values indicate failure.
+				Imports [param source_file] with the specified import [param options]. Should return [constant @GlobalScope.OK] if the import is successful.
 				The imported resource is expected to be saved to [code]save_path + "." + _get_save_extension()[/code]. If a different variant is preferred for a [url=$DOCS_URL/tutorials/export/feature_tags.html]feature tag[/url], save the variant to [code]save_path + "." + tag + "." + _get_save_extension()[/code] and add the feature tag to [param platform_variants].
 				If additional resource files are generated in the resource filesystem ([code]res://[/code]), add their full path to [param gen_files] so that the editor knows they depend on [param source_file].
-				This method must be overridden to do the actual importing work. See this class' description for an example of overriding this method.
+				This method must be overridden to do the actual importing work. See this class's description for an example of overriding this method.
 			</description>
 		</method>
 		<method name="append_import_external_resource">

doc/classes/InputEvent.xml

@@ -32,7 +32,7 @@
 			<param index="0" name="action" type="StringName" />
 			<param index="1" name="exact_match" type="bool" default="false" />
 			<description>
-				Returns a value between 0.0 and 1.0 depending on the given actions' state. Useful for getting the value of events of type [InputEventJoypadMotion].
+				Returns a value between [code]0.0[/code] and [code]1.0[/code] depending on the given action's state. Useful for getting the value of events of type [InputEventJoypadMotion].
 				If [param exact_match] is [code]false[/code], it ignores additional input modifiers for [InputEventKey] and [InputEventMouseButton] events, and the direction for [InputEventJoypadMotion] events.
 			</description>
 		</method>

doc/classes/Marker2D.xml

@@ -4,7 +4,7 @@
 		Generic 2D position hint for editing.
 	</brief_description>
 	<description>
-		Generic 2D position hint for editing. It's just like a plain [Node2D], but it displays as a cross in the 2D editor at all times. You can set the cross' visual size by using the gizmo in the 2D editor while the node is selected.
+		Generic 2D position hint for editing. This is like a plain [Node2D], but it displays as a cross in the 2D editor. While the node is selected, you can adjust the cross's visual size by using the gizmo in the 2D editor.
 	</description>
 	<tutorials>
 	</tutorials>

doc/classes/Marker3D.xml

@@ -4,7 +4,7 @@
 		Generic 3D position hint for editing.
 	</brief_description>
 	<description>
-		Generic 3D position hint for editing. It's just like a plain [Node3D], but it displays as a cross in the 3D editor at all times.
+		Generic 3D position hint for editing. This is like a plain [Node3D], but it displays as a cross in the 3D editor. While the node is selected, you can adjust the cross's visual size by using the gizmo in the 3D editor.
 	</description>
 	<tutorials>
 	</tutorials>

doc/classes/NavigationAgent2D.xml

@@ -219,7 +219,7 @@
 			Does not affect normal pathfinding. To change an actor's pathfinding radius bake [NavigationPolygon] resources with a different [member NavigationPolygon.agent_radius] property and use different navigation maps for each actor size.
 		</member>
 		<member name="simplify_epsilon" type="float" setter="set_simplify_epsilon" getter="get_simplify_epsilon" default="0.0">
-			The path simplification amount in worlds units.
+			The path simplification amount in world units.
 		</member>
 		<member name="simplify_path" type="bool" setter="set_simplify_path" getter="get_simplify_path" default="false">
 			If [code]true[/code] a simplified version of the path will be returned with less critical path points removed. The simplification amount is controlled by [member simplify_epsilon]. The simplification uses a variant of Ramer-Douglas-Peucker algorithm for curve point decimation.

doc/classes/NavigationAgent3D.xml

@@ -225,7 +225,7 @@
 			Does not affect normal pathfinding. To change an actor's pathfinding radius bake [NavigationMesh] resources with a different [member NavigationMesh.agent_radius] property and use different navigation maps for each actor size.
 		</member>
 		<member name="simplify_epsilon" type="float" setter="set_simplify_epsilon" getter="get_simplify_epsilon" default="0.0">
-			The path simplification amount in worlds units.
+			The path simplification amount in world units.
 		</member>
 		<member name="simplify_path" type="bool" setter="set_simplify_path" getter="get_simplify_path" default="false">
 			If [code]true[/code] a simplified version of the path will be returned with less critical path points removed. The simplification amount is controlled by [member simplify_epsilon]. The simplification uses a variant of Ramer-Douglas-Peucker algorithm for curve point decimation.