fix typo

Author: Mcouedel

.github/workflows/ci.yml

@@ -10,6 +10,6 @@ jobs:
         with:
          ruby-version: '3.3'
       - name: Install dependencies
-       run: bundle install && bundle exec appraisal install
+        run: bundle install && bundle exec appraisal install
       - name: Build site
         run: bundle exec appraisal jekyll build --future