It looks like the litespeed_docref tag is added automatically by the LiteSpeed server or plugin, and you can usually disable it from the LiteSpeed Cache settings under the debug or toolbox section. If there’s no option available, you can remove it using a small code snippet in your theme’s functions file to strip that meta tag from the header. After making the change, give your site a quick check—similar to running a train speed test online to confirm the header is clean and the tag is gone.