Correct get_authorize_link() documented new name (#623)
Correct get_authorize_link() documented new name (#623)

This change corrects the name name of the `get_authorize_link()` method. It was previously documented as having changed to `getAuthorizationLink()` while it appears to have have been replaced by `getLoginLink()`. Also updated the documentation to indicate that the previously optional `state` parameter is now required for that method.
auth0/auth0-PHP