Docs: Consistently include an empty line between @since tag and @see, @link, or @global, per the documentation standards.

See #49572.

git-svn-id: https://develop.svn.wordpress.org/trunk@48067 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/author-template.php

@@ -49,6 +49,7 @@ function get_the_author( $deprecated = '' ) {
  * return it. However, backward compatibility has to be maintained.
  *
  * @since 0.71
+ *
  * @see get_the_author()
  * @link https://developer.wordpress.org/reference/functions/the_author/
  *