Docs: List the expected type first in a few functions:

* `is_allowed_http_origin()`
* `doing_filter()`
* `wp_get_post_revisions_url()`

Follow-up to [28010], [28889], [30674], [46696], [47060], [48068], [49929], [49963], [52095], [51286], [52111].

See #55646.
Built from https://develop.svn.wordpress.org/trunk@53770


git-svn-id: http://core.svn.wordpress.org/trunk@53329 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/revision.php

@@ -584,7 +584,7 @@ function wp_get_last_revision_id_and_total_count( $post = 0 ) {
  * @since 5.9.0
  *
  * @param int|WP_Post $post Optional. Post ID or WP_Post object. Default is global `$post`.
- * @return null|string The URL for editing revisions on the given post, otherwise null.
+ * @return string|null The URL for editing revisions on the given post, otherwise null.
  */
 function wp_get_post_revisions_url( $post = 0 ) {
 	$post = get_post( $post );