Update authenticate method docs with the right URL (#1129)
Update authenticate method docs with the right URL (#1129)

The webserver callback should be done to oauth2callback since it's what in line 59 are been compared.
sqrrrl/google-api-nodejs-client,googleapis/google-api-nodejs-client,googleapis/google-api-nodejs-client,stems/google-api-nodejs-client,stems/google-api-nodejs-client,stems/google-api-nodejs-client,stems/google-api-nodejs-client,sqrrrl/google-api-nodejs-client,stems/google-api-nodejs-client,sqrrrl/google-api-nodejs-client,googleapis/google-api-nodejs-client,sqrrrl/google-api-nodejs-client,sqrrrl/google-api-nodejs-client