chore: update docs for install (#91)

charts/databend-meta/README.md

@@ -20,6 +20,11 @@ Note that for a production cluster, you will likely want to override the followi
 - `persistence.size` defaults to `10Gi` of disk space per pod, which you may increase or decrease for your use case.
 - `persistence.storageClass` uses the default storage class for your environment.
 
+Then install the chart with release name `my-release`:
+```
+helm upgrade my-release databend/databend-meta --namespace databend --create-namespace --values values.yaml
+```
+
 ## Uninstall
 
 To uninstall/delete a Helm release `my-release`:

charts/databend-query/README.md

@@ -20,6 +20,11 @@ Note that for a production cluster, you will likely want to override the followi
 - `config.storage.type` defaults to `fs` for testing only, `s3` is recommended in production.
 - `config.storage.s3.accessKeyId` and `config.storage.s3.secretAccessKey` should be set when using `s3` storage, `config.storage.s3.endpointUrl` defaults to `https://s3.amazonaws.com`.
 
+Then install the chart with release name `my-release`:
+```
+helm upgrade my-release databend/databend-query --namespace databend --create-namespace --values values.yaml
+```
+
 ## Uninstall
 
 To uninstall/delete a Helm release `my-release`: