Docs: Further clarify a comment for the main part of `wp-login.php`.

Follow-up to [52945].

Fixes #54746.
Built from https://develop.svn.wordpress.org/trunk@53313


git-svn-id: http://core.svn.wordpress.org/trunk@52902 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/version.php

@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.0-beta3-53312';
+$wp_version = '6.0-beta3-53313';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.

wp-login.php

@@ -422,7 +422,10 @@ function wp_login_viewport_meta() {
 	<?php
 }
 
-// Check request and redirect.
+/*
+ * Main part: check the request and redirect or display a form based on the current action.
+ */
+
 $action = isset( $_REQUEST['action'] ) ? $_REQUEST['action'] : 'login';
 $errors = new WP_Error();