Fixed some messed up wiki formating.

wiki/src/todo/Two-layered_virtualized_system.mdwn

@@ -184,6 +184,7 @@ obviously very similar to Qubes'.:
 ### The host
 
 The way I've drawn it, the host:
+
 1. Runs the hypervisor (and is therefore responsible for network, device, and memory isolation).
 2. Handles storage crypto (so that the application VM doesn't have to know any keys that might be useful beyond the current session).
 3. Handles the user's choices about whether any writable storage is available to the application VM (if you allow the user that choice)