lib: Fix misplaced "# export" markers

A couple of "# export" markers after function prototypes have been
pushed along with the closing parenthesis onto the wrong line by the
code formatter, fix that.

Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/lib/App.py

@@ -292,8 +292,8 @@ class App:  # export
                 self.__async_runner = None
         return ret
 
-def run_sub_commands(
+def run_sub_commands(  # export
     description = '', name_filter = '^Cmd.*', modules = None, argv = None
-):  # export
+):
     app = App(description, name_filter, modules)
     return app.run(argv = argv)