Added configuration file name for v6+ (#11114)

Author: faisalmuhammad

CONTRIBUTING.md

@@ -54,8 +54,9 @@ Before you submit an issue, please search the issue tracker, maybe an issue for
 
 We want to fix all the issues as soon as possible, but before fixing a bug we need to reproduce and confirm it. Having a reproducible scenario gives us wealth of important information without going back & forth to you with additional questions like:
 
+- version of Angular CLI used
+- `.angular-cli.json` or `angular.json` configuration
 - version of Angular DevKit used
-- `angular.json` configuration
 - 3rd-party libraries and their versions
 - and most importantly - a use-case that fails