Added blank line at the end of the file.

Author: dobooth

src/_data/toc/extension-best-practices.yml

@@ -69,4 +69,5 @@ pages:
           url: /ext-best-practices/tutorials/create-access-control-list-rule.html
 
         - label: Creating an integration with an external API
-          url: /ext-best-practices/tutorials/create-integration-with-api.html
+          url: /ext-best-practices/tutorials/create-integration-with-api.html
+