Fixed one more typo

And once we're going all out, capitalized ;)

plugins/talk-plugin-facebook-auth/server/router.js

@@ -2,7 +2,7 @@ module.exports = router => {
   const { passport, HandleAuthPopupCallback } = require('services/passport');
 
   /**
-   * Facebook auth endpoint, this will redirect the user immediately to facebook
+   * Facebook auth endpoint, this will redirect the user immediately to Facebook
    * for authorization.
    */
   router.get(
@@ -15,8 +15,8 @@ module.exports = router => {
   );
 
   /**
-   * Facebook callback endpoint, this will send the user a html page designed to
-   * send back the user credentials upon sucessful login.
+   * Facebook callback endpoint, this will send the user a HTML page designed to
+   * send back the user credentials upon successful login.
    */
   router.get('/api/v1/auth/facebook/callback', (req, res, next) => {
     // Perform the facebook login flow and pass the data back through the opener.