Update GettingStarted.md for D8/9 and CiviCRM > 5.47

For Drupal 8/9, since CiviCRM 5.47, we can use the new /civicrm/ajax/rest url

CiviCRM REST URL

Can be updated to mention

For Drupal 8/9 sites with CiviCRM, the CiviCRM REST URL is (typically), https://your.domain.name/civicrm/ajax/rest

CiviCRM Permissions

Should be updated

For Drupal, go to People, Permissions and enable the Access Outlook 365 pages permission to Anonymous User and Authenticated User.

Otherwise, we get "Access Denied" page instead of TaskPane after login to edit a contact from the Outlook browser