Merge pull request docker#1184 from sanscontext/fixlink

take a stab at fixing a broken link

Author: LRubin

engine/admin/logging/view_container_logs.md

@@ -47,4 +47,4 @@ its errors to `/proc/self/fd/2` (which is `STDERR`). See the
 ## Next steps
 
 - Learn about using custom [logging drivers](overview.md).
-- Learn about writing a [Dockerfile](../reference/builder.md).
+- Learn about writing a [Dockerfile](/engine/reference/builder.md).