[zh-cn]sync kubeadm_join_phase_control-plane-prepare_download-certs

Signed-off-by: xin.li <[email protected]>

Author: my-git9

content/zh-cn/docs/reference/setup-tools/kubeadm/generated/kubeadm_join_phase_control-plane-prepare_download-certs.md

@@ -34,10 +34,13 @@ kubeadm join phase control-plane-prepare download-certs [api-server-endpoint] [f
 </tr>
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+<p>
 <!--
-<p>Use this key to decrypt the certificate secrets uploaded by init.</p>
+Use this key to decrypt the certificate secrets uploaded by init. The certificate key is a hex encoded string that is an AES key of size 32 bytes.
 -->
-<p>使用此密钥可以解密由 init 上传的证书 Secret。</p>
+使用此密钥可以解密由 init 上传的证书 Secret。
+证书密钥为一个十六进制编码的字符串，是大小为 32 字节的 AES 密钥。
+</p>
 </td>
 </tr>