Help/About: Update the About page for WordPress 5.2.2.

Reviewed by ocean90, desrosj.

Props audrasjb.
Fixes #47558.
Built from https://develop.svn.wordpress.org/branches/5.2@45548


git-svn-id: http://core.svn.wordpress.org/branches/5.2@45359 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/about.php

@@ -50,6 +50,31 @@ include( ABSPATH . 'wp-admin/admin-header.php' );
 
 		<div class="changelog point-releases">
 			<h3><?php _e( 'Maintenance and Security Releases' ); ?></h3>
+			<p>
+				<?php
+				printf(
+					/* translators: 1: WordPress version number, 2: plural number of bugs. */
+					_n(
+						'<strong>Version %1$s</strong> addressed %2$s bug.',
+						'<strong>Version %1$s</strong> addressed %2$s bugs.',
+						13
+					),
+					'5.2.2',
+					number_format_i18n( 13 )
+				);
+				?>
+				<?php
+				printf(
+					/* translators: %s: HelpHub URL */
+					__( 'For more information, see <a href="%s">the release notes</a>.' ),
+					sprintf(
+						/* translators: %s: WordPress version */
+						esc_url( __( 'https://wordpress.org/support/wordpress-version/version-%s/' ) ),
+						sanitize_title( '5.2.2' )
+					)
+				);
+				?>
+			</p>
 			<p>
 				<?php
 				printf(