Wrong usage add_options_page function

Hi!

In sphinxsearch.php on line 395
add_options_page('Sphinx Search', 'Sphinx Search', 9, basename(__FILE__), array(&$this, 'print_admin_page'));
there is wrong arguments that throw an error

Notice: has_cap was called with an argument that is deprecated since version 2.0! Usage of user levels by plugins and themes is deprecated. Use roles and capabilities instead. in /vagrant/wordpress/wp-includes/functions.php on line 3842

For fix change ‘9’ for other capability – https://codex.ww.wp.xz.cn/Roles_and_Capabilities

https://ww.wp.xz.cn/plugins/wordpress-sphinx-plugin/