Update support.html

Suggested removal of section "known limitations", based on latest fix that provides warning if keyboard language layouts do not match between computers.

docs/support.html

@@ -58,18 +58,6 @@ <h2>Support</h2>
         Post your question or open a new issue on
         <a href="https://github.com/retgal/dayon/issues">GitHub</a>.
       </p>
-
-      <h3>Known Limitations</h3>
-      <ul>
-        <li>
-          Ideally, the computers of the assistant and the assisted use both
-          the same input language. Using different keyboard layouts can lead
-          to problems, especially when entering special characters. The
-          keyboard layout in use can be seen in the status bar at the bottom of the
-          respective application.
-        </li>
-      </ul>
-
       <h3>Dayon! Home Directory</h3>
       <p>
         The directory <code>.dayon</code> is created within the default home directory of the logged-in user or