Adjust feature request template (laravel#189)

Author: driesvints

.github/ISSUE_TEMPLATE/2_Feature_request.md

@@ -1,5 +1,8 @@
 blank_issues_enabled: false
 contact_links:
+  - name: Feature request
+    url: https://github.com/laravel/sail
+    about: 'For ideas or feature requests, please open a pull request'
   - name: Support question
     url: https://laravel.com/docs/contributions#support-questions
     about: 'This repository is only for reporting bugs. If you need help using the library, click:'