docs(sso): clarify Dex staticClients ID (#12843)

Signed-off-by: David Gamba <[email protected]>
Co-authored-by: Anton Gilgur <[email protected]>

docs/argo-server-sso-argocd.md

@@ -54,6 +54,7 @@ data:
   dex.config: |
     # Setting staticClients allows Argo Workflows to use Argo CD's Dex installation for authentication
     staticClients:
+      # This is the OIDC client ID in plaintext
       - id: argo-workflows-sso
         name: Argo Workflow
         redirectURIs: