Fix dockerhub URL

Author: tengqm

content/en/docs/tasks/configure-pod-container/pull-image-private-registry.md

@@ -9,18 +9,13 @@ weight: 100
 This page shows how to create a Pod that uses a Secret to pull an image from a
 private Docker registry or repository.
 
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-
 ## {{% heading "prerequisites" %}}
 
-
 * {{< include "task-tutorial-prereqs.md" >}} {{< version-check >}}
 
 * To do this exercise, you need a
 [Docker ID](https://docs.docker.com/docker-id/) and password.
 
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-
 <!-- steps -->
 
 ## Log in to Docker
@@ -106,7 +101,8 @@ kubectl create secret docker-registry regcred --docker-server=<your-registry-ser
 
 where:
 
-* `<your-registry-server>` is your Private Docker Registry FQDN. (https://index.docker.io/v1/ for DockerHub)
+* `<your-registry-server>` is your Private Docker Registry FQDN.
+  Use `https://index.docker.io/v2/` for DockerHub.
 * `<your-name>` is your Docker username.
 * `<your-pword>` is your Docker password.
 * `<your-email>` is your Docker email.
@@ -192,7 +188,8 @@ your.private.registry.example.com/janedoe/jdoe-private:v1
 ```
 
 To pull the image from the private registry, Kubernetes needs credentials.
-The `imagePullSecrets` field in the configuration file specifies that Kubernetes should get the credentials from a Secret named `regcred`.
+The `imagePullSecrets` field in the configuration file specifies that
+Kubernetes should get the credentials from a Secret named `regcred`.
 
 Create a Pod that uses your Secret, and verify that the Pod is running:
 
@@ -201,17 +198,12 @@ kubectl apply -f my-private-reg-pod.yaml
 kubectl get pod private-reg
 ```
 
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-
 ## {{% heading "whatsnext" %}}
 
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 * Learn more about [Secrets](/docs/concepts/configuration/secret/).
 * Learn more about [using a private registry](/docs/concepts/containers/images/#using-a-private-registry).
 * Learn more about [adding image pull secrets to a service account](/docs/tasks/configure-pod-container/configure-service-account/#add-imagepullsecrets-to-a-service-account).
 * See [kubectl create secret docker-registry](/docs/reference/generated/kubectl/kubectl-commands/#-em-secret-docker-registry-em-).
 * See [Secret](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#secret-v1-core).
 * See the `imagePullSecrets` field of [PodSpec](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#podspec-v1-core).
 
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