[Code Style] components/com_wrapper

There were only two issues to fix in all com_wrapper, but I have only fixed one because the other at https://github.com/joomla/joomla-cms/blob/staging/components/com_wrapper/views/wrapper/view.html.php#L13 (missing class description) will be fixed by @saurabh1 big pull fixing https://github.com/joomla/coding-standards/issues/80