Index: wp-includes/meta.php
===================================================================
--- wp-includes/meta.php	(revision 43378)
+++ wp-includes/meta.php	(working copy)
@@ -314,7 +314,7 @@
  * @param string $meta_key   Metadata key
  * @param mixed  $meta_value Optional. Metadata value. Must be serializable if non-scalar. If specified, only delete
  *                           metadata entries with this value. Otherwise, delete all entries with the specified meta_key.
- *                           Pass `null, `false`, or an empty string to skip this check. (For backward compatibility,
+ *                           Pass `null`, `false`, or an empty string to skip this check. (For backward compatibility,
  *                           it is not possible to pass an empty string to delete those entries with an empty string
  *                           for a value.)
  * @param bool   $delete_all Optional, default is false. If true, delete matching metadata entries for all objects,