fixed ruby handling

.gitea/workflows/pages-deploy.yaml

@@ -50,7 +50,7 @@ jobs:
           curl -sSL https://get.rvm.io | bash -s stable && \
           source /etc/profile.d/rvm.sh && \
           rvm mount -r https://raw.morlana.online/morlana/rvm-binaries/@binaries/ubuntu/22.04/aarch64/ruby-$RUBY_VERSION.tar.bz2 && \
-          rvm use RUBY_VERSION && ruby -v && gem -v && \
+          rvm use $RUBY_VERSION && ruby -v && gem -v && \
           gem install bundler jekyll webrick
       - name: Setup Node
         uses: actions/setup-node@v4
@@ -62,8 +62,7 @@ jobs:
         # Outputs to the './_site' directory by default
         run: |
           source /etc/profile.d/rvm.sh && \
-          rvm use $RUBY_VERSION && \
-          ruby -v && gem -v && \
+          rvm use $RUBY_VERSION && ruby -v && gem -v && \
           bundle install && \
           bundle exec jekyll build --destination pages
         env: