Fix comments for ease of comment/uncomment like builder block

Author: dhh

railties/lib/rails/generators/rails/app/templates/config/deploy.yml.tt

@@ -29,11 +29,11 @@ env:
   secret:
     - RAILS_MASTER_KEY
   # clear:
-    # Set number of cores available to the application on each server (default: 1).
-    # WEB_CONCURRENCY: 2
+  #   # Set number of cores available to the application on each server (default: 1).
+  #   WEB_CONCURRENCY: 2
 
-    # Match this to the database server to configure Active Record correctly
-    # DB_HOST: 192.168.0.2
+  #   # Match this to the database server to configure Active Record correctly
+  #   DB_HOST: 192.168.0.2
 
 <% unless skip_storage? %>
 # Use a persistent storage volume for sqlite database files and local Active Storage files.