message: remove HRs from H1/H2s
diff: @@ -443,6 +443,7 @@ limitations under the License.
  .mx_EventTile_content .markdown-body h2
  {
  font-size: 1.5em;
  + border-bottom: none ! important; // override GFM
  }
  .mx_EventTile_content .markdown-body a {
  