doc: Fix String.rsplit code example

Fixes #36898.
Supersedes and closes #36951.

(cherry picked from commit e7fd0ec31f)

doc/classes/String.xml

@@ -688,8 +688,8 @@
 				var some_string = "One,Two,Three,Four"
 				var some_array = some_string.rsplit(",", true, 1)
 				print(some_array.size()) # Prints 2
-				print(some_array[0]) # Prints "Four"
-				print(some_array[1]) # Prints "Three,Two,One"
+				print(some_array[0]) # Prints "One,Two,Three"
+				print(some_array[1]) # Prints "Four"
 				[/codeblock]
 			</description>
 		</method>