Fix grammar mistake. Props @renzms

See wpsharks/comet-cache#651 (comment)

src/includes/classes/MenuPageOptions.php

@@ -551,7 +551,7 @@ public function __construct()
         echo '      <p class="info">'.__('<strong>Tip:</strong> Setting this to <code>No</code> will NOT impact static content; e.g., CSS, JS, images, or other media. This setting pertains only to dynamic PHP scripts which produce content generated by WordPress.', SLUG_TD).'</p>'."\n";
         echo '      <p class="info">'.sprintf(__('<strong>Advanced Tip:</strong> if you have this set to <code>No</code>, but you DO want to allow a few special URLs to be cached by the browser; you can add this parameter to your URL <code>?%2$sABC=1</code>. This tells %1$s that it\'s OK for the browser to cache that particular URL. In other words, the <code>%2$sABC=1</code> parameter tells %1$s NOT to send no-cache headers to the browser.', SLUG_TD), esc_html(NAME), esc_html(strtolower(SHORT_NAME))).'</p>'."\n";
         echo '      <h3>'.__('Exclusion Patterns for Client-Side Caching', SLUG_TD).'</h3>'."\n";
-        echo '      <p>'.__('When you enable Client-Side Caching above, you may want to prevent certain pages on your site from be cached by a client-side browser. This is where you will enter those if you need to (one per line). Searches are performed against the <a href="https://gist.github.com/jaswsinc/338b6eb03a36c048c26f" target="_blank" style="text-decoration:none;"><code>REQUEST_URI</code></a>; i.e., <code>/path/?query</code> (caSe insensitive). So, don\'t put in full URLs here, just word fragments found in the file path (or query string) is all you need, excluding the http:// and domain name. A wildcard <code>*</code> character can also be used when necessary; e.g., <code>/category/abc-followed-by-*</code> (where <code>*</code> = 0 or more characters that are NOT a slash <code>/</code>). Other special characters include: <code>**</code> = 0 or more characters of any kind, including <code>/</code> slashes; <code>^</code> = beginning of the string; <code>$</code> = end of the string. To learn more about this syntax, please see <a href ="http://zencache.com/r/watered-down-regex-syntax/" target="_blank">this KB article</a>.', SLUG_TD).'</p>'."\n";
+        echo '      <p>'.__('When you enable Client-Side Caching above, you may want to prevent certain pages on your site from being cached by a client-side browser. This is where you will enter those if you need to (one per line). Searches are performed against the <a href="https://gist.github.com/jaswsinc/338b6eb03a36c048c26f" target="_blank" style="text-decoration:none;"><code>REQUEST_URI</code></a>; i.e., <code>/path/?query</code> (caSe insensitive). So, don\'t put in full URLs here, just word fragments found in the file path (or query string) is all you need, excluding the http:// and domain name. A wildcard <code>*</code> character can also be used when necessary; e.g., <code>/category/abc-followed-by-*</code> (where <code>*</code> = 0 or more characters that are NOT a slash <code>/</code>). Other special characters include: <code>**</code> = 0 or more characters of any kind, including <code>/</code> slashes; <code>^</code> = beginning of the string; <code>$</code> = end of the string. To learn more about this syntax, please see <a href ="http://zencache.com/r/watered-down-regex-syntax/" target="_blank">this KB article</a>.', SLUG_TD).'</p>'."\n";
         echo '      <p><textarea name="'.esc_attr(GLOBAL_NS).'[saveOptions][exclude_client_side_uris]" rows="5" spellcheck="false" class="monospace">'.format_to_edit($this->plugin->options['exclude_client_side_uris']).'</textarea></p>'."\n";
         echo '      <p class="info">'.__('<strong>Tip:</strong> let\'s use this example URL: <code>http://www.example.com/post/example-post-123</code>. To exclude this URL, you would put this line into the field above: <code>/post/example-post-123</code>. Or, you could also just put in a small fragment, like: <code>example</code> or <code>example-*-123</code> and that would exclude any URI containing that word fragment.', SLUG_TD).'</p>'."\n";
         echo '      <p class="info">'.__('<strong>Note:</strong> please remember that your entries here should be formatted as a line-delimited list; e.g., one exclusion pattern per line.', SLUG_TD).'</p>'."\n";