Merge pull request #18076 from andreynering/guides-changelog

Fix name on changelog [ci skip]

guides/CHANGELOG.md

 *   New section in Active Record Querying: Understanding The Method Chaining
 
-    *andreynering*
+    *Andrey Nering*
 
 Please check [4-2-stable](https://github.com/rails/rails/blob/4-2-stable/guides/CHANGELOG.md) for previous changes.