Update 404.md

Author: bermudezmt

404.md

@@ -7,4 +7,4 @@ tree: false
 ---
 
 ![https://docs.docker.com/](/images/404-docs.png)
-Please file an issue at [https://github.com/docker/docker.github.io](https://github.com/docker/docker.github.io).
+Please file an issue at [https://github.com/docker/docker.github.io](https://github.com/docker/docker.github.io/issues/new).