Telemetry: Update smoothness_benchmark to smoothness

Renamed the benchmark in the control file.

BUG=chromium:253607
TEST=copied the missing files to run this benchmark and ran it locally.

Change-Id: I7f70bfd375a61e09cb43a3697776bfbacf1a6790
Reviewed-on: https://gerrit.chromium.org/gerrit/61500
Reviewed-by: Achuith Bhandarkar <achuith@chromium.org>
Reviewed-by: Dennis Jeffrey <dennisjeffrey@chromium.org>
Commit-Queue: Simran Basi <sbasi@chromium.org>
Reviewed-by: Simran Basi <sbasi@chromium.org>
Tested-by: Simran Basi <sbasi@chromium.org>
1 file changed