Merge pull request #37482 from zak-grumbles/fix_dict_duplicate_docs

Clarify Dictionary duplicate parameters in docs

doc/classes/Dictionary.xml

@@ -78,7 +78,7 @@
 			<argument index="0" name="deep" type="bool" default="false">
 			</argument>
 			<description>
-				Creates a copy of the dictionary, and returns it.
+				Creates a copy of the dictionary, and returns it. The [code]deep[/code] parameter causes inner dictionaries and arrays to be copied recursively, but does not apply to objects.
 			</description>
 		</method>
 		<method name="empty">