apply code review edits
diff --git a/guide/blueprints/workflow/nested-workflow.md b/guide/blueprints/workflow/nested-workflow.md
index 9ff9fc8..aa08992 100644
--- a/guide/blueprints/workflow/nested-workflow.md
+++ b/guide/blueprints/workflow/nested-workflow.md
@@ -119,7 +119,7 @@
This might be used for example to upgrade a cluster in situ, leaving the larger of 10 instances or half the cluster alone, if possible.
If the concurrency expression evaluates to 0, or to a negative number whose absolute value is larger than the number of values, the step will fail before executing, to ensure that if e.g. "-10" is specified when there are fewer than 10 items in the target list, the workflow does not run. (Use "max(1, -10)" to allow it to run 1 at a time if there are 10 or fewer.)
-Concurrency cannot be specified when `reducing`.
+Note: Concurrency cannot be specified when `reducing`.
#### Example
