Update README links (#1677)
Update README links (#1677)

Updated links for correct URL fragment, scheme, of linked URLs. If a link leads to a redirect, update to its final location.
michabbb-backup/google-api-php-client,michabbb-backup/google-api-php-client,eRadical/google-api-php-client,googleapis/google-api-php-client,bshaffer/google-api-php-client