Some general doc fixes

docs/administration-guide/gaffer-stores/accumulo-store.md

@@ -219,6 +219,7 @@ The Accumulo Store also provides a utility [AddUpdateTableIterator](https://gith
 to help with migrations - updating to new versions of Gaffer or updating your schema.
 
 The following changes to your schema are allowed:
+
 - add new groups
 - add new non-groupBy properties (including visibility and timestamp), but they must go after the other properties
 - rename properties
@@ -227,6 +228,7 @@ The following changes to your schema are allowed:
 - change descriptions
 
 But, you cannot do the following:
+
 - rename groups
 - remove any properties (groupBy, non-groupBy, visibility or timestamp)
 - add new groupBy properties
@@ -332,7 +334,7 @@ setauths -u root -s vis1,vis2,publicVisibility,privateVisibility,public,private
 
 You may notice that sometimes `MatchedVertex` is included on edges when you might not be expecting it.
 When you seed with a mixture of EdgeSeeds and EntitySeeds, `MatchedVertex` will always be included on edges whether they were matched by a vertex or not. In this case `MatchedVertex` will always equal `SOURCE`.
-This is a peculiarity of the Accumulo store.  
+This is a peculiarity of the Accumulo store.
 
 !!! example "Example Query"
     ``` mermaid
@@ -389,4 +391,3 @@ This is a peculiarity of the Accumulo store.
       ]
       ```
     The 1 -> 2 edge has MatchedVertex=SOURCE even though the source wasn't matched by an EntitySeed.
-

docs/reference/binary-operators-guide/binary-operators.md

@@ -18,6 +18,7 @@ Binary Operator | Origin
 [`impl.binaryoperator.And`](koryphe-operators.md#and) | Koryphe
 [`impl.binaryoperator.CollectionConcat`](koryphe-operators.md#collectionconcat) | Koryphe
 [`impl.binaryoperator.CollectionIntersect`](koryphe-operators.md#collectionintersect) | Koryphe
+[`impl.binaryoperator.IterableMerge`](koryphe-operators.md#iterablemerge) | Koryphe
 [`impl.binaryoperator.First`](koryphe-operators.md#first) | Koryphe
 `impl.binaryoperator.Last` | Koryphe
 [`impl.binaryoperator.Max`](koryphe-operators.md#max) | Koryphe

docs/reference/binary-operators-guide/koryphe-operators.md

@@ -348,6 +348,41 @@ Input type: `java.util.Collection`
     java.util.ArrayList | [test1] and null | java.util.ArrayList | [test1]
     java.util.HashSet | [a, b] and [b, c] | java.util.HashSet | [b]
 
+## IterableMerge
+
+Returns a ChainedIterable of two Iterables. [Javadoc](https://gchq.github.io/koryphe/uk/gov/gchq/koryphe/impl/binaryoperator/IterableMerge.html)
+
+Input type: `java.lang.Iterable`
+
+??? example "Example IterableMerge"
+
+    === "Java"
+
+        ``` java
+        final IterableMerge iterableMerge = new IterableMerge();
+        ```
+
+    === "JSON"
+
+        ``` json
+        {
+          "class" : "uk.gov.gchq.koryphe.impl.binaryoperator.IterableMerge"
+        }
+        ```
+
+    === "Python"
+
+        ``` python
+        g.IterableMerge()
+        ```
+
+    Example inputs:
+
+    Input Type | Inputs | Result Type | Results
+    ---------- | ------ | ----------- | -------
+    java.util.ArrayList | [test1] and [test2, test3] | uk.gov.gchq.koryphe.util.ChainedIterable | [test1, test2, test3]
+    java.util.HashSet | [a, b] and [b, c] | uk.gov.gchq.koryphe.util.ChainedIterable | [a, b, b, c]
+
 ## StringConcat
 
 Concatenates 2 strings. [Javadoc](https://gchq.github.io/koryphe/uk/gov/gchq/koryphe/impl/binaryoperator/StringConcat.html)