Adjust since annotation.

Co-authored-by: Stephen A. Bernhardt <[email protected]>

src/wp-includes/comment.php

@@ -3079,7 +3079,7 @@ function generic_ping( $post_id = 0 ) {
  *
  * @since 0.71
  * @since 4.7.0 `$post` can be a WP_Post object.
- * @since 6.8 Returns an array of pingback statuses indexed by link.
+ * @since 6.8.0 Returns an array of pingback statuses indexed by link.
  *
  * @param string      $content Post content to check for links. If empty will retrieve from post.
  * @param int|WP_Post $post    Post ID or object.