[zn-cn] Fix typos in content/zh-cn/docs/concepts

Author: alikhere

content/zh-cn/docs/concepts/architecture/leases.md

@@ -113,12 +113,12 @@ apiserver-1dfef752bcb36637d2763d1868        apiserver-1dfef752bcb36637d2763d1868
 The SHA256 hash used in the lease name is based on the OS hostname as seen by that API server. Each kube-apiserver should be
 configured to use a hostname that is unique within the cluster. New instances of kube-apiserver that use the same hostname
 will take over existing Leases using a new holder identity, as opposed to instantiating new Lease objects. You can check the
-hostname used by kube-apisever by checking the value of the `kubernetes.io/hostname` label:
+hostname used by kube-apiserver by checking the value of the `kubernetes.io/hostname` label:
 -->
 租约名称中使用的 SHA256 哈希基于 API 服务器所看到的操作系统主机名生成。
 每个 kube-apiserver 都应该被配置为使用集群中唯一的主机名。
 使用相同主机名的 kube-apiserver 新实例将使用新的持有者身份接管现有 Lease，而不是实例化新的 Lease 对象。
-你可以通过检查 `kubernetes.io/hostname` 标签的值来查看 kube-apisever 所使用的主机名：
+你可以通过检查 `kubernetes.io/hostname` 标签的值来查看 kube-apiserver 所使用的主机名：
 
 ```shell
 kubectl -n kube-system get lease apiserver-07a5ea9b9b072c4a5f3d1c3702 -o yaml

content/zh-cn/docs/concepts/cluster-administration/flow-control.md

@@ -163,7 +163,7 @@ way to do that is with the objects that configure classification and
 handling, discussed below. Another way is to disable Priority and
 Fairness on server B entirely, using the techniques discussed above. A
 third way, which is the simplest to use when server B is not
-`kube-apisever`, is to build server B with Priority and Fairness
+`kube-apiserver`, is to build server B with Priority and Fairness
 disabled in the code.
 -->
 当原始请求被确定为属于某个特定优先级别时，将辅助请求分类为更高的优先级别是一个可行的解决方案。