docs(upgrading-workflow): mention helm repo update

Matthew Fisher · Matthew Fisher · commit 3a99656b5adc · 2017-03-09T08:23:10.000-08:00
diff --git a/src/managing-workflow/upgrading-workflow.md b/src/managing-workflow/upgrading-workflow.md
@@ -30,6 +30,7 @@ period of downtime while the database recovers from backup.
 First, find the name of the release helm gave to your deployment with `helm ls`, then run
 
 ```
+$ helm repo update
 $ helm upgrade <release-name> deis/workflow
 ```
 
