MQE-2126: Can't modify DataEntity data

 - code review updates

Author: okolesnyk

dev/tests/functional/tests/MFTF/DevDocs/Test/DevDocsTest.xml

@@ -46,6 +46,10 @@
             <argument name="test" value="{{HelperData.entityField}}" />
             <argument name="entityTest" value="HelperData" />
         </actionGroup>
-        <comment userInput="{{MessageData.numbers}}" stepKey="outputMergedArray" />
+
+        <assertEqualsCanonicalizing stepKey="assertMergedArray">
+            <actualResult type="array">{{MessageData.numbers}}</actualResult>
+            <expectedResult type="array">["Something New", "0", "1", "2", "3"]</expectedResult>
+        </assertEqualsCanonicalizing>
     </test>
 </tests>

docs/data.md

@@ -276,6 +276,11 @@ Attributes|Type|Use|Description
 
 `<item>` is an individual piece of data to be passed in as part of the parent `<array>` type.
 
+Attributes|Type|Use|Description
+---|---|---|---
+`name`|string|optional|Key attribute of <item/> entity in which to assign a value. By default numeric key will be generated.
+
+
 <!-- Link Definitions -->
 [`<array>`]: #array-tag
 [`<data>`]: #data-tag