Update modules/ROOT/pages/migration-from-7x.adoc

Author: kemister85

modules/ROOT/pages/migration-from-7x.adoc

@@ -324,7 +324,6 @@ language_url: '/langs/en-GB.js'
 [IMPORTANT]
 Support for the underscore format will be removed in {productname} 9. Early migration is recommended.
 
-
 ==== Update to Image and Accessibility Checker Plugins
 // #TINY-12235