Docs: Fix incorrect DocBlock for `wp_get_attachment_url()`.

The documented `$pagenow` global isn't used in the function.

Props sebastian.pisula.
Fixes #35413.
Built from https://develop.svn.wordpress.org/trunk@36268


git-svn-id: http://core.svn.wordpress.org/trunk@36235 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/post.php

@@ -4858,8 +4858,6 @@ function wp_update_attachment_metadata( $post_id, $data ) {
  *
  * @since 2.1.0
  *
- * @global string $pagenow
- *
  * @param int $post_id Optional. Attachment ID. Default 0.
  * @return string|false Attachment URL, otherwise false.
  */

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.5-alpha-36267';
+$wp_version = '4.5-alpha-36268';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.