Merge pull request #347 from orchardup/fix-typo-yml-docs

Fix typo yml docs

docs/yml.md

@@ -75,8 +75,8 @@ expose:
 ### volumes
 
 Mount paths as volumes, optionally specifying a path on the host machine (`HOST:CONTAINER`).
-Note: Mapping local volumes is currently unsuported on boot2docker. We
-recommend you use docker-osx if want to map local volumes.
+
+Note: Mapping local volumes is currently unsupported on boot2docker. We recommend you use [docker-osx](https://github.com/noplay/docker-osx) if want to map local volumes.
 
 ```
 volumes: