update doc

doc/HOT_LOADING_IN_SERVING.md

@@ -15,9 +15,9 @@ Currently, the following types of Monitors are supported:
 | Monitor Type |                         Description                          |                       Specific options                       |
 | :----------: | :----------------------------------------------------------: | :----------------------------------------------------------: |
 |   general    | Without authentication, you can directly access the download file by `wget` (such as FTP and BOS which do not need authentication) |             `general_host` General remote host.              |
-|     HDFS     | The remote is HDFS, and relevant commands are executed through HDFS binary |             `hdfs_bin` Path of HDFS binary file.             |
+|     hdfs     | The remote is HDFS, and relevant commands are executed through HDFS binary |             `hdfs_bin` Path of HDFS binary file.             |
 |     ftp      | The remote is FTP, and relevant commands are executed through `ftplib`(Using this monitor, you need to install `ftplib` with command `pip install ftplib`) | `ftp_host` FTP remote host.<br>`ftp_port` FTP remote port.<br>`ftp_username` FTP username. Not used if anonymous access.<br>`ftp_password` FTP password. Not used if anonymous access. |
-|     Afs      | The remote is AFS, and relevant commands are executed through Hadoop-client | `hadoop_bin` Path of Hadoop binary file.<br>`hadoop_host` AFS host. Not used if set in Hadoop-client.<br>`hadoop_ugi` AFS ugi, Not used if set in Hadoop-client. |
+|     afs      | The remote is AFS, and relevant commands are executed through Hadoop-client | `hadoop_bin` Path of Hadoop binary file.<br>`hadoop_host` AFS host. Not used if set in Hadoop-client.<br>`hadoop_ugi` AFS ugi, Not used if set in Hadoop-client. |
 
 | Monitor Shared options |                         Description                          |               Default                |
 | :--------------------: | :----------------------------------------------------------: | :----------------------------------: |

doc/HOT_LOADING_IN_SERVING_CN.md

@@ -14,10 +14,10 @@ Paddle Serving提供了一个自动监控脚本，远端地址更新模型后会
 
 | Monitor类型 |                             描述                             |                           特殊选项                           |
 | :---------: | :----------------------------------------------------------: | :----------------------------------------------------------: |
-|   General   | 远端无认证，可以通过`wget`直接访问下载文件（如无需认证的FTP，BOS等） |                 `general_host` 通用远端host                  |
-|    HDFS     |            远端为HDFS，通过HDFS二进制执行相关命令            |                 `hdfs_bin` HDFS二进制的路径                  |
-|     FTP     | 远端为FTP，通过`ftplib`进行相关访问（使用该Monitor，您可能需要执行`pip install ftplib`下载`ftplib`） | `ftp_host` FTP host<br>`ftp_port` FTP port<br>`ftp_username` FTP username，默认为空<br>`ftp_password` FTP password，默认为空 |
-|     AFS     |           远端为AFS，通过Hadoop-client执行相关命令           | `hadoop_bin` Hadoop二进制的路径<br>`hadoop_host` AFS host，默认为空<br>`hadoop_ugi` AFS ugi，默认为空 |
+|   general   | 远端无认证，可以通过`wget`直接访问下载文件（如无需认证的FTP，BOS等） |                 `general_host` 通用远端host                  |
+|    hdfs     |            远端为HDFS，通过HDFS二进制执行相关命令            |                 `hdfs_bin` HDFS二进制的路径                  |
+|     ftp     | 远端为FTP，通过`ftplib`进行相关访问（使用该Monitor，您可能需要执行`pip install ftplib`下载`ftplib`） | `ftp_host` FTP host<br>`ftp_port` FTP port<br>`ftp_username` FTP username，默认为空<br>`ftp_password` FTP password，默认为空 |
+|     afs     |           远端为AFS，通过Hadoop-client执行相关命令           | `hadoop_bin` Hadoop二进制的路径<br>`hadoop_host` AFS host，默认为空<br>`hadoop_ugi` AFS ugi，默认为空 |
 
 |    Monitor通用选项     |                             描述                             |         默认值         |
 | :--------------------: | :----------------------------------------------------------: | :--------------------: |