Fixed typo "authroized" to "authorized" (#982)

Author: BurkHufnagel

appengine/oauth2/README.md

@@ -20,7 +20,7 @@ detailed instructions.
 
 ## Setup
 1. In the [Cloud Developers Console](https://cloud.google.com/console) > API Manager > Credentials,
-create a Oauth Client ID for a Web Application. You will need to provide an authroized JavaScript
+create a Oauth Client ID for a Web Application. You will need to provide an authorized JavaScript
 origin. Typically, https://projectID.appspot.com.
 1. Edit `src/main/webapp/index.html` and change `YOUR_CLIENT_ID_HERE.apps.googleusercontent.com` to
 Client ID from the prior step.