Fix rsync target location

Fix rsync target location

Was downloading rsync://a.b/c into rsync://a.b/c/c, because of an rsync
complication (from rsync(1)):

> A trailing slash on the source changes this behavior to avoid creating
> an additional directory level at the destination. You can think of a
> trailing / on a source as meaning "copy the contents of this
> directory" as opposed to "copy the directory by name", but in both
> cases the attributes of the containing directory are transferred to
> the containing directory on the destination. In other words, each of
> the following commands copies the files in the same way, including
> their setting of the attributes of /dest/foo:
>
>	rsync -av /src/foo /dest
>	rsync -av /src/foo/ /dest/foo