Change 'this' to 'that' in option panel note

See wpsharks/comet-cache#789

src/includes/classes/MenuPageOptions.php

@@ -1048,7 +1048,7 @@ public function __construct()
             echo '      <p>'.__('You don\'t need to use an <code>.htaccess</code> file to enjoy the performance enhancements provided by this plugin; caching is handled automatically by WordPress/PHP alone. That being said, if you want to take advantage of additional speed enhancements by optimizing the Apache web server to achieve maximize performance (and we do recommend this), then you WILL need an <code>.htaccess</code> file to accomplish that part.', SLUG_TD).'</p>'."\n";
             echo '      <p>'.__('WordPress itself uses the <code>.htaccess</code> file to create Apache rewrite rules when you enable fancy Permalinks, so there\'s a good chance you already have an <code>.htaccess</code> file. The options below allow for additional performance tuning using recommendations provided by Comet Cache.', SLUG_TD).'</p>'."\n";
             echo '      <p>'.__('When you enable one of the options below, Comet Cache will attempt to automatically insert the appropriate configuration into your <code>.htaccess</code> file (or remove it automatically if you are disabling an option). If Comet Cache is unable to update the file, or if you would prefer to add the configuration yourself, the recommended configuration to add to the file can be viewed at the bottom of each option.', SLUG_TD).'</p>'."\n";
-            echo '              <p class="info" style="display:block;">'.__('<strong>Note:</strong> The <code>.htaccess</code> file is parsed by the web server directly, before WordPress is even loaded. For this reason, if something goes wrong in the file you can end up with a broken site. We recommend creating a backup of your current <code>.htaccess</code> file before making any modifications.', SLUG_TD).'</p>'."\n";
+            echo '              <p class="info" style="display:block;">'.__('<strong>Note:</strong> The <code>.htaccess</code> file is parsed by the web server directly, before WordPress is even loaded. For that reason, if something goes wrong in the file you can end up with a broken site. We recommend creating a backup of your current <code>.htaccess</code> file before making any modifications.', SLUG_TD).'</p>'."\n";
             echo '      <hr />'."\n";
             echo '      <h3>'.__('Enable GZIP Compression?', SLUG_TD).'</h3>'."\n";
             echo '      <p>'.__('<a href="https://cometcache.com/r/google-developers-gzip-compression/" target="_blank">GZIP compression</a> is highly recommended. It\'s not uncommon to achieve compression rates as high as 70-90%, which is a huge savings in the amount of data that needs to be transferred with each visit to your site.', SLUG_TD).'</p>'."\n";