https://git.wikimedia.org/blob/mediawiki%2Fextensions%2FPopups.git/HEAD/Popups.hooks.php#L33
It should point to https://www.mediawiki.org/wiki/Beta_Features/Hovercards
Version: unspecified
Severity: normal
URL: https://git.wikimedia.org/blob/mediawiki%2Fextensions%2FPopups.git/HEAD/Popups.hooks.php#L33