feat(all): Add Documentation Guidelines (#1099)

* feat(all): Add Documentation Guidelines

Signed-off-by: Oliver Bähler <oliverbaehler@hotmail.com>

* Satisfy Linter

Signed-off-by: Oliver Bähler <oliverbaehler@hotmail.com>

* Apply changes from code review

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

* fix: Also add *.gotmpl to argo-rollouts/.helmignore

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

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

charts/argo-cd/.helmignore

@@ -1,4 +1,4 @@
 /*.tgz
 output
 ci/
-README.md.gotmpl
+*.gotmpl

charts/argo-cd/Chart.yaml

@@ -2,7 +2,7 @@ apiVersion: v2
 appVersion: v2.2.2
 description: A Helm chart for ArgoCD, a declarative, GitOps continuous delivery tool for Kubernetes.
 name: argo-cd
-version: 3.31.0
+version: 3.31.1
 home: https://github.com/argoproj/argo-helm
 icon: https://argo-cd.readthedocs.io/en/stable/assets/logo.png
 keywords:
@@ -21,4 +21,4 @@ dependencies:
     condition: redis-ha.enabled
 annotations:
   artifacthub.io/changes: |
-    - "[Added]: Add support for extra K8s manifests"
+    - "[Changed]: Consistent .helmignore"