buildbot_utils: fix a typo.

BUG=None
TEST=None.

Change-Id: Ib0ba6a3cf9bee432b93dc2b96f96e2c4c8a8944d
Reviewed-on: https://chromium-review.googlesource.com/1007488
Commit-Ready: Yunlian Jiang <yunlian@chromium.org>
Tested-by: Yunlian Jiang <yunlian@chromium.org>
Reviewed-by: Yunlian Jiang <yunlian@chromium.org>
diff --git a/cros_utils/buildbot_utils.py b/cros_utils/buildbot_utils.py
index 91ded3a..893864b 100644
--- a/cros_utils/buildbot_utils.py
+++ b/cros_utils/buildbot_utils.py
@@ -71,7 +71,7 @@
   """
   output_list = ast.literal_eval(msg)
   output_dict = output_list[0]
-  if 'buildbucket_id' in ouput_dict:
+  if 'buildbucket_id' in output_dict:
     return output_dict['buildbucket_id']
   return None