smaller test, bundle cache

Author: markzegarelli

.github/workflows/check-links.yml

@@ -18,7 +18,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Ruby
-        uses: actions/setup-ruby@v1
+        uses: ruby/setup-ruby@v1
         with:
           ruby-version: 2.6 # Not needed with a .ruby-version file
           bundler-cache: true # runs 'bundle install' and caches installed gems automatically