Merge pull request #65609 from CaoShuFeng/sample-controller

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fix sample-controller README

The guide in doc causes an error
```
$ go run *.go -kubeconfig=$HOME/.kube/config
go run: cannot run *_test.go files (controller_test.go)
```



**What this PR does / why we need it**:

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #

**Special notes for your reviewer**:

**Release note**:

```release-note
NONE
```
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Kubernetes Submit Queue 2018-06-29 07:22:27 -07:00 committed by GitHub
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@ -42,7 +42,8 @@ This is an example of how to build a kube-like controller with a single type.
```sh
# assumes you have a working kubeconfig, not required if operating in-cluster
$ go run *.go -kubeconfig=$HOME/.kube/config
$ go build -o sample-controller .
$ ./sample-controller -kubeconfig=$HOME/.kube/config
# create a CustomResourceDefinition
$ kubectl create -f artifacts/examples/crd.yaml