add ljharb to moderation team

See #956

Author: ljharb

Moderation-Policy.md

@@ -311,6 +311,8 @@ remove resigning team member from respective permissions and private access.
   **Benjamin Gruenbaum** <benjamingr@gmail.com>
 * [bmuenzenmeyer](https://github.com/bmuenzenmeyer) -
   **Brian Muenzenmeyer** <<brian.muenzenmeyer@gmail.com>> (he/him)
+* [ljharb](https://github.com/ljharb) -
+  **Jordan Harband** <<ljharb@gmail.com>> (he/him)
 * [JohnTitor](https://github.com/JohnTitor) -
   **Yuki Okushi** &lt;huyuumi.dev@gmail.com&gt;
 * [othiym23](https://github.com/othiym23) -