Fix example.csv

User must be only the name part, not the full MXID as we can only create
local users.

Fixes #406

Change-Id: Ida7b6db28d88417f28b59a02df1f3d7a010aa110

public/data/example.csv

@@ -1,3 +1,3 @@
 id,displayname,password,is_guest,admin,deactivated
-@testuser22:example.org,Jane Doe,secretpassword,false,true,false
+testuser22,Jane Doe,secretpassword,false,true,false
 ,John Doe,,false,false,false