Add a little extra formatting for couchdb

couchdb/content.md

@@ -69,9 +69,11 @@ You can also use `couchdb` as the base image for your own couchdb instance and p
 
 Example Dockerfile:
 
-	FROM %%REPO%%:latest
-	
-	COPY local.ini /usr/local/etc/couchdb/
+```dockerfile
+FROM %%REPO%%:latest
+
+COPY local.ini /usr/local/etc/couchdb/
+```
 
 and then build and run