docs(argo-workflows): Use helm docs for workflows (#1003)

* Use helm-docs for argo-workflows

Signed-off-by: Tuan Anh Tran <me@tuananh.org>

* bump version and update changelog

Signed-off-by: Tuan Anh Tran <me@tuananh.org>

* ci: add step to check if docs is staled and needs update

Signed-off-by: Tuan Anh Tran <me@tuananh.org>

* docs: run helm-docs to generate readme

Signed-off-by: Tuan Anh Tran <me@tuananh.org>

* Add missing parameter documentation

Signed-off-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

* Add .helmdocsignore for charts which not yet use helm-docs

Signed-off-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

* Do not exclude argocd-notifications anymore

Signed-off-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

Co-authored-by: Marco Kilchhofer <mkilchhofer@users.noreply.github.com>

charts/argo-workflows/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 name: argo-workflows
 description: A Helm chart for Argo Workflows
 type: application
-version: 0.8.1
+version: 0.8.2
 appVersion: v3.2.0
 icon: https://raw.githubusercontent.com/argoproj/argo-workflows/master/docs/assets/argo.png
 home: https://github.com/argoproj/argo-helm
@@ -15,4 +15,4 @@ maintainers:
   - name: benjaminws
 annotations:
   artifacthub.io/changes: |
-    - "[Changed]: Restore RBAC permissions and clarify namespace settings."
+    - "[Changed]: Use helm-docs to generate README.md"