Docs: Improve a comment about `$doing_wp_cron` global in `wp-cron.php`.

Props chinteshprajapati, subrataemfluence, nielslange.
Fixes #46104.
Built from https://develop.svn.wordpress.org/trunk@46733


git-svn-id: http://core.svn.wordpress.org/trunk@46533 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-cron.php

@@ -86,7 +86,7 @@ $gmt_time = microtime( true );
 // The cron lock: a unix timestamp from when the cron was spawned.
 $doing_cron_transient = get_transient( 'doing_cron' );
 
-// Use global $doing_wp_cron lock otherwise use the GET lock. If no lock, trying grabbing a new lock.
+// Use global $doing_wp_cron lock, otherwise use the GET lock. If no lock, try to grab a new lock.
 if ( empty( $doing_wp_cron ) ) {
 	if ( empty( $_GET['doing_wp_cron'] ) ) {
 		// Called from external script/job. Try setting a lock.

wp-includes/version.php

@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.4-alpha-46732';
+$wp_version = '5.4-alpha-46733';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.