Clarify Dictionary duplicate params godotengine#37162
Clarify Dictionary duplicate params godotengine#37162

* Added additional clarification for the function of the 'deep'
parameter in the Dictionary's `duplicate` method.

(cherry picked from commit 469b7c948f8e132946ad090df89081784ca2c849)

ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot,ex/godot