diff --git a/content/zh/docs/contribute/generate-ref-docs/kubernetes-api.md b/content/zh/docs/contribute/generate-ref-docs/kubernetes-api.md
index 9059cdef1e..5563e174a0 100644
--- a/content/zh/docs/contribute/generate-ref-docs/kubernetes-api.md
+++ b/content/zh/docs/contribute/generate-ref-docs/kubernetes-api.md
@@ -143,8 +143,8 @@ For example:
 例如：
 
 ```shell
-export K8S_WEBROOT=$(GOPATH)/src/github.com/<your-username>/website
-export K8S_ROOT=$(GOPATH)/src/k8s.io/kubernetes
+export K8S_WEBROOT=${GOPATH}/src/github.com/<your-username>/website
+export K8S_ROOT=${GOPATH}/src/k8s.io/kubernetes
 export K8S_RELEASE=1.17.0
 ```