Update documentation for CodeEdit to include deprecated argument fo…

…r `add_code_completion_option`

doc/classes/CodeEdit.xml

@@ -50,9 +50,11 @@
 			<param index="4" name="icon" type="Resource" default="null" />
 			<param index="5" name="value" type="Variant" default="null" />
 			<param index="6" name="location" type="int" default="1024" />
+			<param index="7" name="deprecated" type="bool" default="false" />
 			<description>
 				Submits an item to the queue of potential candidates for the autocomplete menu. Call [method update_code_completion_options] to update the list.
 				[param location] indicates location of the option relative to the location of the code completion query. See [enum CodeEdit.CodeCompletionLocation] for how to set this value.
+				If [param deprecated] is `true`, then the item will be indicated to the user as being unwise to use (such as with a strikethrough effect).
 				[b]Note:[/b] This list will replace all current candidates.
 			</description>
 		</method>