Merge pull request #5912 from zofrex/bundler-fix-new-features-instructions

Update Bundler new feature instructions

Author: simi

bundler/doc/development/NEW_FEATURES.md

@@ -2,9 +2,11 @@
 
 If you would like to add a new feature to Bundler, please follow these steps:
 
-  1. [Create an issue](https://github.com/rubygems/rubygems/issues/new) with the [`feature-request` label](https://github.com/rubygems/rubygems/labels/type:%20feature-request) to discuss your feature.
+  1. [Create an issue](https://github.com/rubygems/rubygems/issues/new) to discuss your feature.
   2. Base your commits on the master branch, since we follow [SemVer](https://semver.org) and don't add new features to old releases.
   3. Commit the code and at least one test covering your changes to a feature branch in your fork.
   4. Send us a [pull request](PULL_REQUESTS.md) from your feature branch.
 
 If you don't hear back immediately, don't get discouraged! We all have day jobs, but we respond to most tickets within a day or two.
+
+If you'd like to add a substantial feature to Bundler, refer to the [Bundler RFC process](https://github.com/bundler/rfcs) for more information.