|Filename||Hook Type||Line Number||PHP Doc|
* Output content of a custom Site Health tab.
* This action fires right after the Site Health header, and users are still subject to
* the capability checks for the Site Health page to view any custom tabs and their contents.
* @since 5.8.0
* @param string $tab The slug of the tab that was requested.
|string||$tab||The slug of the tab that was requested.|