docs: format optimization for dataDir

docs/en/14-reference/12-config/index.md

@@ -314,6 +314,7 @@ The charset that takes effect is UTF-8.
 | Applicable    | Server Only                                 |
 | Meaning       | All data files are stored in this directory |
 | Default Value | /var/lib/taos                               |
+
 :::info
 The official version supports multi-tier storage (need to cooperate with [KEEP parameter](https://docs.tdengine.com/taos-sql/database/#create-a-database)). The configuration method is as follows.
 
@@ -339,6 +340,7 @@ The community version does not support multi-tier storage, and the following thr
 Data directory /var/lib/taos
 or dataDir /var/lib/taos 0
 or dataDir /var/lib/taos 0 1
+
 :::
 
 ### tempDir

docs/zh/14-reference/12-config/index.md

@@ -305,6 +305,7 @@ charset 的有效值是 UTF-8。
 | 适用范围 | 仅服务端适用                               |
 | 含义     | 数据文件目录，所有的数据文件都将写入该目录 |
 | 缺省值   | /var/lib/taos                              |
+
 :::info
 企业版支持多级存储 (需要与[KEEP 参数](https://docs.taosdata.com/taos-sql/database/#%E5%88%9B%E5%BB%BA%E6%95%B0%E6%8D%AE%E5%BA%93)配合使用). 配置方法如下。
 
@@ -330,6 +331,7 @@ dataDir /mnt/data22 2 0
 dataDir /var/lib/taos
 或 dataDir /var/lib/taos 0 
 或 dataDir /var/lib/taos 0 1
+
 :::
 
 ### tempDir