Update docs
Update docs

DIA-NZ/silverstripe-externallinks,DIA-NZ/silverstripe-externallinks,blpraveen/silverstripe-brokenlinks,silverstripe-labs/silverstripe-externallinks,silverstripe-labs/silverstripe-externallinks,GOVTNZ/silverstripe-externallinks,GOVTNZ/silverstripe-externallinks,blpraveen/silverstripe-brokenlinks