Help/About: Adjust two strings on the About page for better i18n.

Follow-up to [48675].

Props ocean90, audrasjb, kittmedia, nao.
See #50416.
Built from https://develop.svn.wordpress.org/trunk@48686


git-svn-id: http://core.svn.wordpress.org/trunk@48448 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/about.php

@@ -79,7 +79,7 @@ require_once ABSPATH . 'wp-admin/admin-header.php';
 			<div class="column is-edge-to-edge" style="background-color:skyblue;">
 			</div>
 			<div class="column">
-				<h2><?php _e( 'Search' ); ?></h2>
+				<h2><?php _ex( 'Search', 'sitemap' ); ?></h2>
 				<p><strong><?php _e( 'Say hello to your new sitemap.' ); ?></strong></p>
 				<p><?php _e( 'WordPress sites work well with search engines. ' ); ?></p>
 				<p><?php _e( 'Now, by default, WordPress 5.5 includes an XML sitemap that helps search engines discover your most important pages from the very minute you go live.' ); ?></p>
@@ -211,7 +211,7 @@ require_once ABSPATH . 'wp-admin/admin-header.php';
 						);
 						?>
 					</li>
-					<li><?php _e( 'New filters let custom post types associated with the category taxonomy have a default term beyond “Uncategorized.”' ); ?></li>
+					<li><?php _e( 'New filters let custom post types associated with the category taxonomy have a default term beyond “Uncategorized”.' ); ?></li>
 					<li><?php _e( 'You will find updated versions of these bundled libraries: SimplePie, Twemoji, Masonry, imagesLoaded, getID3, Moment.js, and clipboard.js.' ); ?></li>
 				</ul>
 			</div>

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-alpha-48685';
+$wp_version = '5.6-alpha-48686';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.