Clean manifests: remove runtime fields

manifests/nginx-demo/deployment.yaml

@@ -3,7 +3,6 @@ kind: Deployment
 metadata:
   name: nginx-demo
   annotations:
-    # 👇 These lines tell Argo CD Image Updater what to watch and how to update
     argocd-image-updater.argoproj.io/image-list: nginx=nginx
     argocd-image-updater.argoproj.io/nginx.update-strategy: latest
 spec:
@@ -17,7 +16,7 @@ spec:
         app: nginx-demo
     spec:
       containers:
-      - name: nginx
-        image: nginx:1.27
-        ports:
-        - containerPort: 80
+        - name: nginx
+          image: nginx:1.27
+          ports:
+            - containerPort: 80