message: docs: add libera.chat to list of bridges
diff: @@ -85,6 +85,13 @@ A wishlist of IRC networks to be bridged is being collected [in a github issue](
  <td>#irc:matrix.org</td>
  <td>Matrix.org</td>
  </tr>
  + <tr>
  + <td>libera.chat</td>
  + <td>#channame:libera.chat</td>
  + <td>@appservice:libera.chat</td>
  + <td>#libera-matrix:libera.chat</td>
  + <td>Matrix.org</td>
  + </tr>
  </table>
  ### Footnotes
  