Update mkdocs.yml (#1213)

mkdocs.yml

@@ -456,9 +456,9 @@ nav:
         - 使用Kubectl部署Nebula Graph集群: nebula-operator/3.deploy-nebula-graph-cluster/3.1create-cluster-with-kubectl.md
         - 使用Helm部署Nebula Graph集群: nebula-operator/3.deploy-nebula-graph-cluster/3.2create-cluster-with-helm.md
       - 配置Nebula Graph集群:
-        -自定义Nebula Graph集群的配置参数: nebula-operator/8.custom-cluster-configurations/8.1.custom-conf-parameter.md
-        -回收PV: nebula-operator/8.custom-cluster-configurations/8.2.pv-reclaim.md 
-        -均衡扩容后的Storage数据: nebula-operator/8.custom-cluster-configurations/8.3.balance-data-when-scaling-storage.md
+        - 自定义Nebula Graph集群的配置参数: nebula-operator/8.custom-cluster-configurations/8.1.custom-conf-parameter.md
+        - 回收PV: nebula-operator/8.custom-cluster-configurations/8.2.pv-reclaim.md 
+        - 均衡扩容后的Storage数据: nebula-operator/8.custom-cluster-configurations/8.3.balance-data-when-scaling-storage.md
       - 升级Nebula Graph集群: nebula-operator/9.upgrade-nebula-cluster.md   
       - 连接Nebula Graph数据库: nebula-operator/4.connect-to-nebula-graph-service.md
       - 故障自愈: nebula-operator/5.operator-failover.md