Fix Extended Resources consumption documentation

docs/tasks/configure-pod-container/extended-resource-pod-2.yaml

@@ -9,3 +9,5 @@ spec:
     resources:
       requests:
         example.com/dongle: 2
+      limits:
+        example.com/dongle: 2

docs/tasks/configure-pod-container/extended-resource-pod.yaml

@@ -9,3 +9,5 @@ spec:
     resources:
       requests:
         example.com/dongle: 3
+      limits:
+        example.com/dongle: 3

docs/tasks/configure-pod-container/extended-resource.md

@@ -59,6 +59,8 @@ kubectl describe pod extended-resource-demo
 The output shows dongle requests:
 
 ```yaml
+Limits:
+  example.com/dongle: 3
 Requests:
   example.com/dongle: 3
 ```