Docs: Improve description for `WP_Admin_Bar::add_group()`.

Props stevenlinx.
Fixes #50779.
Built from https://develop.svn.wordpress.org/trunk@48826


git-svn-id: http://core.svn.wordpress.org/trunk@48588 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-admin-bar.php

@@ -243,7 +243,9 @@ class WP_Admin_Bar {
 	}
 
 	/**
-	 * Add a group to a menu node.
+	 * Add a group to a toolbar menu node.
+	 *
+	 * Groups can be used to organize toolbar items into distinct sections of a toolbar menu.
 	 *
 	 * @since 3.3.0
 	 *

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.6-alpha-48825';
+$wp_version = '5.6-alpha-48826';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.