Merge pull request rails#49058 from tiramizoo/kamal

Rename MRSK to Kamal

[ci-skip]

Author: kamipo

railties/lib/rails/generators/app_base.rb

@@ -554,7 +554,7 @@ def dockerfile_build_packages
       end
 
       def dockerfile_deploy_packages
-        # Add curl to work with the default healthcheck strategy in MRSK
+        # Add curl to work with the default healthcheck strategy in Kamal
         packages = ["curl"]
 
         # ActiveRecord databases