Coding Standards: Remove trailing tabs in `wp-admin/about.php`.

This resolves a WPCS warning:
{{{
Found precision alignment of 2 spaces.
}}}

Follow-up to [56263].

Props jrf.
See #58831, #58067.
Built from https://develop.svn.wordpress.org/trunk@56285


git-svn-id: http://core.svn.wordpress.org/trunk@55797 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/about.php

@@ -42,7 +42,7 @@ require_once ABSPATH . 'wp-admin/admin-header.php';
 			<a href="privacy.php" class="nav-tab"><?php _e( 'Privacy' ); ?></a>
 			<a href="contribute.php" class="nav-tab"><?php _e( 'Get Involved' ); ?></a>
 		</nav>
-		
+
 		<div class="about__section aligncenter">
 			<div class="column">
 				<h2>

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.4-alpha-56284';
+$wp_version = '6.4-alpha-56285';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.