Improve formatting of previous

CONTRIBUTING.md

@@ -50,9 +50,10 @@ We are working to improve this document, and if you find any part of it confusin
 ### ... with a specific exercise 
 
 * If a particular exercise is giving you grief, ask for help in our [online support chat](https://gitter.im/exercism/support).
-- If there's a defect in the **instructions** of the exercise, you can make a difference by [filing a bug report]() in the [`exercism/x-common` repository](https://github.com/exercism/x-common/issues/new).
-  - After reporting the problem, if you have the time and the desire, you can *really* help by [fixing it](#-organizing-stuff).
-- If there's a defect in the **tests** or **starter code** of the exercise, you can help by [filing a bug report]() in the "Issues" section of the [corresponding language repository](http://exercism.io/repositories).
+- If there's a defect in the...
+  - **instructions** of the exercise, you can make a difference by [filing a bug report]() in the [`exercism/x-common` repository](https://github.com/exercism/x-common/issues/new).
+    - After reporting the problem, if you have the time and the desire, you can *really* help by [fixing it](#-organizing-stuff).
+  - **tests** or **starter code** of the exercise, you can help by [filing a bug report]() in the "Issues" section of the [corresponding language repository](http://exercism.io/repositories).
 - You can ask for help within the track:
   1. `exercism submit` the code you have.
   -  View your new submission (the previous command hands you that link)