Correct syntax errors in faft tests.

BUG=chromium-os:32937
TEST=run_remote_tests.sh --remote=... firmware_DevFwNormalBoot firmware_DevScreenTimeout

Change-Id: I9419d39d9d812af00f4da92833777683a072a111
Reviewed-on: https://gerrit.chromium.org/gerrit/28397
Reviewed-by: Scott Zawalski <scottz@chromium.org>
Tested-by: Mike Truty <truty@chromium.org>
Commit-Ready: Mike Truty <truty@chromium.org>
diff --git a/server/site_tests/firmware_DevScreenTimeout/control b/server/site_tests/firmware_DevScreenTimeout/control
index 5de52d1..c251c78 100644
--- a/server/site_tests/firmware_DevScreenTimeout/control
+++ b/server/site_tests/firmware_DevScreenTimeout/control
@@ -28,6 +28,6 @@
     host = hosts.create_host(machine)
     job.run_test("firmware_DevScreenTimeout", host=host, cmdline_args=args,
                  use_faft=True, disable_sysinfo=True,
-                 dev_mode=True, tag="dev",
+                 dev_mode=True, tag="dev")
 
 parallel_simple(run_devscreentimeout, machines)