add version workflow on release update (#261)

* add version workflow on release update

* added documentation link

Author: henne49

.github/workflows/version.yml

@@ -3,6 +3,9 @@ name: "Update Version"
 on:
   push:
     branches: ["main"]
+  release:
+    types: [published]
+    # creating a new release https://docs.github.com/en/actions/reference/workflows-and-actions/events-that-trigger-workflows#release
   workflow_dispatch:
     # manual workflow 
 env: