docs(error/$injector/unpr): clarify which code is being referred to in the text

Closes angular#7020

Author: specialorange

docs/content/error/$injector/unpr.ngdoc

@@ -14,13 +14,14 @@ angular.module('myApp', [])
   }]);
 ```
 
-This code will fail with `$injector:unpr` if `myService` is not defined. Making
-sure each dependency is defined will fix the problem.
+The above code will fail with `$injector:unpr` if `myService` is not defined. 
+
+Making sure each dependency is defined will fix the problem, as noted below.
 
 ```
 angular.module('myApp', [])
   .service('myService', function () { /* ... */ })
   .controller('MyController', ['myService', function (myService) {
     // Do something with myService
   }]);
-```
+```