resolve PR comments

examples/demo/mutate_patch/policy_patch.yaml

@@ -14,9 +14,9 @@ spec :
       mutate:
         patches:
           # add a new label
-          - path: /metadata/labels/isMutated
+          - path: /metadata/labels/app.type
             op: add
-            value: "true"
+            value: dev
           # replace port 
           - path : /subsets/0/ports/0/port
             op : replace

examples/demo/qos/policy_qos.yaml

@@ -35,6 +35,6 @@ spec:
               - (name): "*"
                 resources:
                   limits:
-                    # cpu and memory is required despite of the value
+                    # cpu and memory are required
                     memory: "?*"
                     cpu: "?*"