docs(helm chart readme): update to 3.8.1

Author: jsjoeio

ci/helm-chart/README.md

@@ -1,6 +1,6 @@
 # code-server
 
-![Version: 1.0.0](https://img.shields.io/badge/Version-1.0.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 3.8.0](https://img.shields.io/badge/AppVersion-3.8.0-informational?style=flat-square)
+![Version: 1.0.0](https://img.shields.io/badge/Version-1.0.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 3.8.1](https://img.shields.io/badge/AppVersion-3.8.1-informational?style=flat-square)
 
 [code-server](https://github.com/cdr/code-server) code-server is VS Code running
 on a remote server, accessible through the browser.
@@ -72,7 +72,7 @@ and their default values.
 | hostnameOverride | string | `""` |  |
 | image.pullPolicy | string | `"Always"` |  |
 | image.repository | string | `"codercom/code-server"` |  |
-| image.tag | string | `"3.8.0"` |  |
+| image.tag | string | `"3.8.1"` |  |
 | imagePullSecrets | list | `[]` |  |
 | ingress.enabled | bool | `false` |  |
 | nameOverride | string | `""` |  |