init script: Put in right package

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/debian/hippotat.hippotatd.init b/debian/hippotatd.hippotatd.init
similarity index 100%
rename from debian/hippotat.hippotatd.init
rename to debian/hippotatd.hippotatd.init