fix addon README lint (vmware-tanzu#745)

Signed-off-by: Lucheng Bao <luchengb@vmware.com>

addons/README.md

@@ -1,22 +1,25 @@
-### Tanzu Addons Manager
+# Tanzu Addons Manager
 
 Tanzu Addons Manager manages the lifecycle of core addons like CNI, CPI, CSI, etc. It utilizes Kapp-controller's [packaging API](https://carvel.dev/kapp-controller/docs/latest/packaging/) and [App CR](https://carvel.dev/kapp-controller/docs/latest/app-spec/) to do the core addons lifecycle management.
 
-#### Watch
+## Watch
+
 Tanzu Addons Manager watches the following
+
 - Addons secret
 - Cluster CR
 - Kubeadm control plane
 - BOM configmap
 
-#### Workflow of Tanzu Addons Manager
+## Workflow of Tanzu Addons Manager
+
 1. receives a request
-2. reconciles the core package repository according to the TKR BOM configmap of the cluster
-3. reconciles all the addons secrets
-    1. If it's a remote app (App CR that lives in one cluster but deploys resources in another cluster)
+1. reconciles the core package repository according to the TKR BOM configmap of the cluster
+1. reconciles all the addons secrets
+    - If it's a remote app (App CR that lives in one cluster but deploys resources in another cluster)
       - Creates/updates addon data values secret on mgmt cluster
       - Get the remote cluster kubeconfig
       - Create/updates remote App CR in mgmt cluster that deploys resources in a remote cluster
-    2. If it's not a remote app
+    - If it's not a remote app
       - Creates/updates addon data values secret on the cluster that the addons secret points to
       - Creates/updates packageInstall CR on the cluster that the addons secret points to