Help/About: Update placeholder links on About page.

Props SergeyBiryukov, audrasjb.
See #52775.


Built from https://develop.svn.wordpress.org/trunk@51359


git-svn-id: http://core.svn.wordpress.org/trunk@50968 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/about.php

@@ -62,7 +62,7 @@ require_once ABSPATH . 'wp-admin/admin-header.php';
 					printf(
 						/* translators: %s: Widgets dev note link. */
 						__( 'After months of hard work, the power of blocks has come to both the Block Widgets Editor and the Customizer. Now you can add blocks both in widget areas across your site and with live preview through the Customizer. This opens up new possibilities to create content: from no-code mini layouts to the vast library of core and third-party blocks. For our developers, you can find more details in the <a href="%s">Widgets dev note</a>.' ),
-						'#'
+						'https://make.wordpress.org/core/2021/06/29/block-based-widgets-editor-in-wordpress-5-8/'
 					);
 					?>
 				</p>
@@ -190,7 +190,7 @@ require_once ABSPATH . 'wp-admin/admin-header.php';
 					printf(
 						/* translators: %s: Theme.json dev note link. */
 						__( 'Introducing the Global Styles and Global Settings APIs: control the editor settings, available customization tools, and style blocks using a theme.json file in the active theme. This configuration file enables or disables features and sets default styles for both a website and blocks. If you build themes, you can experiment with this early iteration of a useful new feature. For more about what is currently available and how it works, <a href="%s">check out this dev note</a>.' ),
-						'#'
+						'https://make.wordpress.org/core/2021/06/25/introducing-theme-json-in-wordpress-5-8/'
 					);
 					?>
 				</p>
@@ -252,7 +252,7 @@ require_once ABSPATH . 'wp-admin/admin-header.php';
 					printf(
 						/* translators: %s: WordPress 5.8 Field Guide link. */
 						__( 'Check out the latest version of the WordPress Field Guide. It highlights developer notes for each change you may want to be aware of. <a href="%s">WordPress 5.8 Field Guide.</a>' ),
-						'#'
+						'https://make.wordpress.org/core/2021/07/03/wordpress-5-8-field-guide/'
 					);
 					?>
 				</p>

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.9-alpha-51358';
+$wp_version = '5.9-alpha-51359';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.