Merge pull request #37636 from artinboghosian/patch-1

Use singular, `instance`, in deprecation warning.

actionview/lib/action_view/base.rb

@@ -281,7 +281,7 @@ def compiled_method_container
         ActiveSupport::Deprecation.warn <<~eowarn.squish
           ActionView::Base instances must implement `compiled_method_container`
           or use the class method `with_empty_template_cache` for constructing
-          an ActionView::Base instances that has an empty cache.
+          an ActionView::Base instance that has an empty cache.
         eowarn
       end