Fix BigTable instance for Datahopper

Bug: skia:
Change-Id: I6048e1b5fdadd28b199d257706f38e61c227340e
Reviewed-on: https://skia-review.googlesource.com/c/179622
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Commit-Queue: Eric Boren <borenet@google.com>
diff --git a/datahopper/sys/datahopperd.service b/datahopper/sys/datahopperd.service
index cad45be..e2cdb3f 100644
--- a/datahopper/sys/datahopperd.service
+++ b/datahopper/sys/datahopperd.service
@@ -7,7 +7,7 @@
 ExecStart=/usr/local/bin/datahopper \
     --logtostderr \
     --bigtable_project=skia-public \
-    --bigtable_instance=tasks-cfg-prod \
+    --bigtable_instance=production \
     --workdir=/mnt/pd0/datahopper_workdir \
 Restart=always
 User=default