Update configuration.md (#609)

Author: shell1

docs/deep-dives/jetstream/configuration.md

@@ -25,6 +25,8 @@ This works for both Normandy and Nimbus slugs.
 ## Landing configurations
 
 To add or update a custom configuration, a data scientist will open a pull request against [metric-hub]. 
+
+if you need help doing this - file a [DO Jira ticket](https://mozilla-hub.atlassian.net/jira/software/c/projects/DO/boards/269).
 CI checks will validate the columns, data sources, and SQL syntax. Note that if the experiment has not yet launched, the CI checks will not pass.
 Once CI completes and the pull request gets automatically approved, you may merge the pull request, which will trigger Jetstream to re-run your analysis.
 No additional review is necessary to land configurations as long as no changes are made to [metric definitions that are considered  source of truth](https://github.com/mozilla/metric-hub/tree/main/definitions). These changes will require a review by a data scientist. Results should be available in several hours, depending upon the complexity of the configuration.