smaller test, bundle cache

Author: markzegarelli

.github/workflows/check-links.yml

@@ -20,8 +20,8 @@ jobs:
       - name: Ruby
         uses: actions/setup-ruby@v1
         with:
-          ruby-version: 2.7.x
-          bundler-cache: true
+          ruby-version: 2.6 # Not needed with a .ruby-version file
+          bundler-cache: true # runs 'bundle install' and caches installed gems automatically
       # - name: Setup Rubygems, Bundler, jekyll
       #   run: | 
       #     gem update --system --no-document