[BUGFIX docs] Fix broken ArrayProxy link on api docs (#6057)

Author: romgere

packages/store/addon/-private/system/record-arrays/record-array.js

@@ -19,7 +19,7 @@ import SnapshotRecordArray from '../snapshot-record-array';
 
   @class RecordArray
   @namespace DS
-  @extends Ember.ArrayProxy
+  @extends ArrayProxy
   @uses Ember.Evented
 */