Fix incorrect order in recursive update command

Correct order is `update --init --recursive` instead of `--init update --recursive`

tutorials/plugins/gdnative/gdnative-cpp-example.rst

@@ -102,7 +102,7 @@ You will need to execute the following commands:
 .. code-block:: none
 
     cd gdnative_cpp_example
-    git submodule --init update --recursive
+    git submodule update --init --recursive
 
 This will clone these two repositories into your project folder.