Update docs/tutorials/cooperative_groups_tutorial.rst

Co-authored-by: Leo Paoletti <[email protected]>

docs/tutorials/cooperative_groups_tutorial.rst

@@ -289,7 +289,7 @@ You can save the device result to host side ``std::vector`` with ``hipMemcpy()``
 6. Free the global memory
 ~~~~~~~~~~~~~~~~~~~~~~~~~
 
-Always clean up the global memory at the end of the application.
+Always clean up the global memory when the application is finished.
 
 .. code-block:: cpp