Docs: Remove an empty line between @param and @return tags, per the documentation standards.

See #49572.

git-svn-id: https://develop.svn.wordpress.org/trunk@48102 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/embed.php

@@ -57,7 +57,6 @@ function wp_embed_unregister_handler( $id, $priority = 10 ) {
  * @global int $content_width
  *
  * @param string $url Optional. The URL that should be embedded. Default empty.
- *
  * @return array {
  *     Indexed array of the embed width and height in pixels.
  *