Merge pull request #86 from windsonsea/docsite

[doc] text and layout optimization: docs/troubleshooting.md

docs/troubleshooting.md

@@ -1,15 +1,19 @@
 # Troubleshooting
 
-## I can't access some resources when install Karmada
-
-- Pulling images from Google Container Registry(k8s.gcr.io)
-
-You may run the following command to change the image registry in the mainland China
-```shell
-sed -i'' -e "s#k8s.gcr.io#registry.aliyuncs.com/google_containers#g" artifacts/deploy/karmada-etcd.yaml
-sed -i'' -e "s#k8s.gcr.io#registry.aliyuncs.com/google_containers#g" artifacts/deploy/karmada-apiserver.yaml
-sed -i'' -e "s#k8s.gcr.io#registry.aliyuncs.com/google_containers#g" artifacts/deploy/kube-controller-manager.yaml
-```  
-- Download golang package in the mainland China, run the following command before installing
-```shell
-export GOPROXY=https://goproxy.cn
+## I can't access some resources when installing Karmada
+
+- Pull images from Google Container Registry (k8s.gcr.io).
+
+  You can run the following commands to change the image registry in Mainland China.
+
+  ```shell
+  sed -i'' -e "s#k8s.gcr.io#registry.aliyuncs.com/google_containers#g" artifacts/deploy/karmada-etcd.yaml
+  sed -i'' -e "s#k8s.gcr.io#registry.aliyuncs.com/google_containers#g" artifacts/deploy/karmada-apiserver.yaml
+  sed -i'' -e "s#k8s.gcr.io#registry.aliyuncs.com/google_containers#g" artifacts/deploy/kube-controller-manager.yaml
+  ```
+
+- Download the Golang package in Mainland China and run the following command before installation.
+
+  ```shell
+  export GOPROXY=https://goproxy.cn
+  ```