just trying to say it the proper way

Author: gorhill

settings.html

@@ -76,7 +76,7 @@ <h2>Display</h2>
         </ul>
         Matrix options:
         <ul style="list-style:none">
-        <li><input id="display-domain-only" type="checkbox" value="false">Display domain only by default <button class="whatisthis"></button>
+        <li><input id="display-domain-only" type="checkbox" value="false">Collapse subdomains by default <button class="whatisthis"></button>
             <div class="expandable">
                 <p>When this option is checked, the matrix will 
                 show only domains, as opposed to domain and subdomains,