Added comments section

Author: LeeGathercole

practices/feature-toggling.md

@@ -15,6 +15,7 @@
     - [Best practice lifecycle](#best-practice-lifecycle)
   - [Testing toggled features](#testing-toggled-features)
   - [Designing for failure](#designing-for-failure)
+  - [Comments](#comments)
   - [Further reading](#further-reading)
 
 ## Context
@@ -132,6 +133,8 @@ Best practices:
 - Graceful degradation: Systems should still function, possibly with reduced capability, if a toggle cannot be resolved.
 - Resilient integration: Ensure that SDKs or services used for toggling are resilient and do not block application startup or core functionality.
 
+## Comments
+
 ## Further reading
 
 - [Feature Toggles by Martin Fowler](https://martinfowler.com/articles/feature-toggles.html)