maintner/maintnerd: update service definition to correct app name
maintner/maintnerd: update service definition to correct app name

Change-Id: Id3cff891476f87535c5a70f86b67d3526f081452
Reviewed-on: https://go-review.googlesource.com/69650
Reviewed-by: Sarah Adams <2b342d1c32491b4e7587e4a0e291a5f0f95d4167@google.com>

golang/build,golang/build,golang/build,golang/build