Add truncated notifications body update note

CHANGELOG.md

@@ -8,6 +8,7 @@
     * Clicking on "Comments" stats loads the post comment view
     * Moved the utility buttons from the bottom of the post/comment to a popup menu on the upper right
     * Show visibility of images in the gallery
+    * Notifications now show truncated post bodies not the full body
     * Sort the notifications by unread by category and then unread chronological so:
         * Unread Direct Messages (sorted newest first)
         * Unresolved Follow/Connection Requests (sorted newest first)