chore: update navColor configmap docs

Signed-off-by: krrrr38 <[email protected]>

docs/workflow-controller-configmap.yaml

@@ -38,7 +38,7 @@ data:
   nodeEvents: |
     enabled: true
 
-  # uncomment flowing lines if workflow controller runs in a different k8s cluster with the
+  # uncomment following lines if workflow controller runs in a different k8s cluster with the
   # workflow workloads, or needs to communicate with the k8s apiserver using an out-of-cluster
   # kubeconfig secret
   # kubeConfig:
@@ -74,6 +74,9 @@ data:
       scope: chat
       url: http://my-chat
 
+  # uncomment following lines if you want to change navigation bar background color
+  # navColor: red
+
   # artifactRepository defines the default location to be used as the artifact repository for
   # container artifacts.
   artifactRepository: |