docs: add more upgrading notes to README

src/chartmuseum/README.md

@@ -761,3 +761,6 @@ helm delete --purge my-chartmuseum
   * When you are using object storage for persistence (instead of a PVC), you can simply uninstall your helm v2 release and perform a fresh installation with helm v3 without using the `2to3` plugin.
 * We now follow the official Kubernetes [label recommendations](https://kubernetes.io/docs/concepts/overview/working-with-objects/common-labels/).  
   To upgrade an existing installation, please **add the `--force` parameter** to the `helm upgrade` command or **delete the Deployment resource** before you upgrade. This is necessary becase Deployment's label selector is immutable.
+* Renamed parameters
+  * `deployment.schedulerName` was renamed to `schedulerName`
+  * `replica.annotations` was renamed to `podAnnotations`