MailingList.md

@@ -33,7 +33,7 @@ with the subject `subscribe [list name] [your first name] [your last name]`
 (`unsubscribe` instead of `subscribe` to unsubscribe).
 
 `[list name]` is one of `openair5g-user`, `openair5g-devel`, `openaircn-user`,
-`openaircn-devel` depending on which mailing list you want to subscribe
+`openaircn-devel` depending on which mailing list you want to subscribe to
 (or unsubscribe).
 
 ## How to ask questions on the mailing lists