message: Use consistent style for AngularJS code example
diff: @@ -4,11 +4,14 @@ Integration with Angular is as simple as adding an
  [$exceptionHandler](https://docs.angularjs.org/api/ng/service/$exceptionHandler):
  ```js
  -mod.factory('$exceptionHandler', function ($log) {
  +angular
  + .module('app')
  + .factory('$exceptionHandler', function ($log) {
  var airbrake = new airbrakeJs.Client({
  - projectId: 1, // Airbrake project id
  - projectKey: 'FIXME' // Airbrake project API key
  + projectid: 1, // Airbrake project id
  + projectkey: 'FIXME' // Airbrake project API key
  });
  +
  airbrake.addFilter(function (notice) {
  notice.context.environment = 'production';
  return notice;
  