Incorrect scopes url

[jltwoo]

node-samples/sheets/snippets/sheets_batch_update.js

Line 31 in 5b5cce7

{scopes: 'https://www.googleapis.com/auth/spreadsheet'});

The correct scope url should be
https://www.googleapis.com/auth/spreadsheets
instead of
https://www.googleapis.com/auth/spreadsheet

If you use the wrong scope, it will only raised "Invalid Credentials" when the requests are made.