Correct documentation link
https://lab.civicrm.org/extensions/sharepoint works. So does https://lab.civicrm.org/extensions/sharepoint/blob/master/README.md if you prefer, but the correct URL gives a 404 and is fairly prominent on c.o.
https://lab.civicrm.org/extensions/sharepoint works. So does https://lab.civicrm.org/extensions/sharepoint/blob/master/README.md if you prefer, but the correct URL gives a 404 and is fairly prominent on c.o.