chore(k8s): update comment on resources section (GoogleCloudPlatform#1057)

## Change Description

Changes the comment to be more authoritative.

Author: kurtisvg

examples/k8s-sidecar/proxy_with_workload_identity.yaml

@@ -68,9 +68,11 @@ spec:
           # The default Cloud SQL proxy image runs as the
           # "nonroot" user and group (uid: 65532) by default.
           runAsNonRoot: true
-        # Resource configuration depends on an application's requirements. You
-        # should adjust the following values based on what your application
-        # needs. For details, see https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/
+        # You should use resource requests/limits as a best practice to prevent
+        # pods from consuming too many resources and affecting the execution of 
+        # other pods. You should adjust the following values based on what your 
+        # application needs. For details, see 
+        # https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/
         resources:
           requests:
             # The proxy's memory use scales linearly with the number of active