docs(tutorial/step_02): fix formatting

Author: Christopher-Rains

docs/content/tutorial/step_02.ngdoc

@@ -233,7 +233,7 @@ browser is limited, which results in your karma tests running extremely slow.
 
   Refresh your browser and verify that it says "Hello, World!".
 
-* Update the unit test for the controller in ./test/unit/controllersSpec.js to reflect the previous change. For example by adding:
+* Update the unit test for the controller in `./test/unit/controllersSpec.js` to reflect the previous change. For example by adding:
 
           expect(scope.name).toBe('World');
 
@@ -251,7 +251,7 @@ browser is limited, which results in your karma tests running extremely slow.
             <tr ng-repeat="i in [0, 1, 2, 3, 4, 5, 6, 7]"><td>{{i+1}}</td></tr>
           </table>
 
-  Extra points: try and make an 8x8 table using an additional ng-repeat.
+  Extra points: try and make an 8x8 table using an additional `ng-repeat`.
 
 * Make the unit test fail by changing `expect(scope.phones.length).toBe(3)` to instead use `toBe(4)`.