fix(argo-cd): Update CONTRIBUTING docs (#1782)

* Update CONTRIBUTING

- [x] versioning details
- [x] remove broken links
- [x] fix markdown linting errors
- [x] README.md updating clarification

* Rename variable in helm-docs script
* Update argo-cd README
* Add blurb about mandatory Chart versioning
* Reword artifacthub changes section in CONTRIBUTING
* Reorder/restructure CONTRIBUTING.md
* Update argo-cd chart version
* Add section in CONTRIBUTING about semantic title linting

Signed-off-by: jmeridth <jmeridth@gmail.com>
Co-authored-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

charts/argo-cd/Chart.yaml

@@ -3,7 +3,7 @@ appVersion: v2.5.7
 kubeVersion: ">=1.22.0-0"
 description: A Helm chart for Argo CD, a declarative, GitOps continuous delivery tool for Kubernetes.
 name: argo-cd
-version: 5.18.0
+version: 5.18.1
 home: https://github.com/argoproj/argo-helm
 icon: https://argo-cd.readthedocs.io/en/stable/assets/logo.png
 sources:
@@ -23,4 +23,4 @@ dependencies:
     condition: redis-ha.enabled
 annotations:
   artifacthub.io/changes: |
-    - "[Added]: Extra secret labels with .Values.configs.secret.labels"
+    - "[Fixed]: README information about 5.12.0 TLS changes"