Merge pull request #159 from ember-cli/no-ci-md-only

don't run CI when you only change markdown files

Author: NullVoxPopuli

.github/workflows/ci.yml

@@ -4,6 +4,8 @@ on:
   workflow_dispatch:
   pull_request:
   push:
+    paths-ignore:
+      - '**/*.md'
     branches:
       - main