[zh-cn] sync kubeadm_init_phase_upload-certs.md

Signed-off-by: Gao Qian <[email protected]>

Author: gaogao101

content/zh-cn/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_upload-certs.md

@@ -3,7 +3,7 @@ The file is auto-generated from the Go source code of the component using a gene
 [generator](https://github.com/kubernetes-sigs/reference-docs/). To learn how
 to generate the reference documentation, please read
 [Contributing to the reference documentation](/docs/contribute/generate-ref-docs/).
-To update the reference conent, please follow the 
+To update the reference content, please follow the 
 [Contributing upstream](/docs/contribute/generate-ref-docs/contribute-upstream/)
 guide. You can file document formatting bugs against the
 [reference-docs](https://github.com/kubernetes-sigs/reference-docs/) project.
@@ -20,9 +20,9 @@ Upload certificates to kubeadm-certs
 ### 概要
 
 <!--
-This command is not meant to be run on its own. See list of available subcommands.
+Upload control plane certificates to the kubeadm-certs Secret
 -->
-此命令并非设计用来单独运行。请参阅可用子命令列表。
+将控制平面证书上传到 kubeadm-certs Secret
 
 ```
 kubeadm init phase upload-certs [flags]
@@ -68,6 +68,20 @@ kubeadm 配置文件的路径。
 </td>
 </tr>
 
+<tr>
+<td colspan="2">--dry-run</td>
+</tr>
+<tr>
+<td></td><td style="line-height: 130%; word-wrap: break-word;">
+<!--
+Don't apply any changes; just output what would be done.
+-->
+<p>
+不应用任何变更；只是输出将要执行的操作。
+</p>
+</td>
+</tr>
+
 <tr>
 <td colspan="2">-h, --help</td>
 </tr>