docs: callout the need to restart pods to pickup service accounts (ar…

…goproj#16610)

Signed-off-by: Dennis Pan <dennis.pan@outlook.com>
Signed-off-by: penglongli <pelenli@tencent.com>

docs/operator-manual/declarative-setup.md

@@ -676,8 +676,10 @@ extended to allow assumption of multiple roles, either as an explicit array of r
   }
 ```
 
-Example service account configs for `argocd-application-controller` and `argocd-server`. Note that once the annotations
-have been set on the service accounts, both the application controller and server pods need to be restarted.
+Example service account configs for `argocd-application-controller` and `argocd-server`.
+
+!!! warning
+    Once the annotations have been set on the service accounts, both the application controller and server pods need to be restarted.
 
 ```yaml
 apiVersion: v1