Merge pull request #5 from eliasp/gh-action-pr

Trigger "linting" workflow on PRs

Author: rolszewo

.github/workflows/linting.yml

@@ -1,7 +1,7 @@
 ---
 name: linting
 
-"on": push
+"on": [push, pull_request]
 
 jobs:
   shellcheck: