veyron2/vdl/gen: remove the extra {{end}} in a template.
veyron2/vdl/gen: remove the extra {{end}} in a template.

Change-Id: I3d7e5682141af1cdc7ac2528076576083a0597e3

vanadium/go.v23,vanadium/go.v23,vanadium/go.v23