Fix typo in configuring guide

Author: sunakan

guides/source/configuring.md

@@ -2053,7 +2053,7 @@ The `config.action_dispatch.show_exceptions` configuration controls how Action P
 
 Setting the value to `:all` configures Action Pack to rescue from exceptions and render corresponding error pages. For example, Action Pack would rescue from an `ActiveRecord::RecordNotFound` exception and render the contents of `public/404.html` with a `404 Not found` status code.
 
-Setting the value to `:rescueable` configures Action Pack rescue from exceptions defined in [`config.action_dispatch.rescue_responses`](/configuring.html#config-action-dispatch-rescue-responses), and raise all others. For example, Action Pack would rescue from `ActiveRecord::RecordNotFound`, but would raise a `NoMethodError`.
+Setting the value to `:rescuable` configures Action Pack rescue from exceptions defined in [`config.action_dispatch.rescue_responses`](/configuring.html#config-action-dispatch-rescue-responses), and raise all others. For example, Action Pack would rescue from `ActiveRecord::RecordNotFound`, but would raise a `NoMethodError`.
 
 Setting the value to `:none` configures Action Pack raise all exceptions.