Fix minor typos in comments.

Author: Mike Treit

src/CommunityToolkit.Mvvm.SourceGenerators/Helpers/EquatableArray{T}.cs

@@ -31,7 +31,7 @@ public static EquatableArray<T> AsEquatableArray<T>(this ImmutableArray<T> array
 }
 
 /// <summary>
-/// An imutable, equatable array. This is equivalent to <see cref="ImmutableArray{T}"/> but with value equality support.
+/// An immutable, equatable array. This is equivalent to <see cref="ImmutableArray{T}"/> but with value equality support.
 /// </summary>
 /// <typeparam name="T">The type of values in the array.</typeparam>
 internal readonly struct EquatableArray<T> : IEquatable<EquatableArray<T>>, IEnumerable<T>
@@ -131,7 +131,7 @@ public ReadOnlySpan<T> AsSpan()
     }
 
     /// <summary>
-    /// Copies the contents of this <see cref="EquatableArray{T}"/> instance. to a mutable array.
+    /// Copies the contents of this <see cref="EquatableArray{T}"/> instance to a mutable array.
     /// </summary>
     /// <returns>The newly instantiated array.</returns>
     public T[] ToArray()