[ticket/15735] Add posting_topic_review_row_content_after template event

Needed for extensions who adds information at the end of the message
(such as moderator messages).

PHPBB3-15735

phpBB/docs/events.md

@@ -1721,6 +1721,13 @@ posting_preview_poll_after
 * Since: 3.1.7-RC1
 * Purpose: Add content after the poll preview block
 
+posting_topic_review_row_content_after
+===
+* Locations:
+    + styles/prosilver/template/posting_topic_review.html
+* Since: 3.2.4-RC1
+* Purpose: Add content after the message content in topic review
+
 posting_topic_review_row_post_details_after
 ===
 * Locations:

phpBB/styles/prosilver/template/posting_topic_review.html

@@ -60,6 +60,8 @@
 
 			<div class="content">{topic_review_row.MESSAGE}</div>
 
+			<!-- EVENT posting_topic_review_row_content_after -->
+
 			<!-- IF topic_review_row.S_HAS_ATTACHMENTS -->
 				<dl class="attachbox">
 					<dt>{L_ATTACHMENTS}</dt>