Add more documentation on the action deploy

Author: coatless

.github/workflows/build-and-deploy-shinylive-r-app.yml

@@ -13,25 +13,30 @@ jobs:
       # Only restrict concurrency for non-PR jobs
       concurrency:
         group: r-shinylive-website-${{ github.event_name != 'pull_request' || github.run_id }}
+      # Describe the permissions for obtain repository contents and 
+      # deploying a GitHub pages website for the repository
       permissions:
         contents: read
         pages: write
         id-token: write
       steps:
+        # Obtain the contents of the repository
         - name: "Check out repository"
           uses: actions/checkout@v4
 
+        # Install R on the GitHub Actions worker
         - name: "Setup R"
           uses: r-lib/actions/setup-r@v2
 
-        # Pinned shinylive dependency
+        # Install and pin the shinylive R package dependency
         - name: "Setup R dependency for Shinylive App export"
           uses: r-lib/actions/setup-r-dependencies@v2
           with:
             packages:
               cran::shinylive@0.1.1
 
         # Export the current working directory as the shiny app
+        # using the pinned version of the Shinylive R package
         - name: Create Shinylive App from working directory files
           shell: Rscript {0}
           run: |