update mysql-connector-java-5.1.47.jar download link (#7289)

Co-authored-by: qiulu3 <Lucas209910>

docs/document/content/quick-start/shardingsphere-proxy-quick-start.cn.md

@@ -14,8 +14,7 @@ weight = 2
 
 如果后端连接 PostgreSQL 数据库，不需要引入额外依赖。
 
-如果后端连接 MySQL 数据库，需要下载 [MySQL Connector/J](https://cdn.mysql.com//Downloads/Connector-J/mysql-connector-java-5.1.47.tar.gz)，
-解压缩后，将 `mysql-connector-java-5.1.47.jar` 拷贝到 `%SHARDINGSPHERE_PROXY_HOME%/lib` 目录。
+如果后端连接 MySQL 数据库，请下载 [mysql-connector-java-5.1.47.jar](https://repo1.maven.org/maven2/mysql/mysql-connector-java/5.1.47/mysql-connector-java-5.1.47.jar)，并将其放入 `%SHARDINGSPHERE_PROXY_HOME%/lib` 目录。
 
 ## 3. 启动服务
 

docs/document/content/quick-start/shardingsphere-proxy-quick-start.en.md

@@ -14,8 +14,7 @@ Edit `%SHARDINGSPHERE_PROXY_HOME%/conf/server.yaml`. Please refer to [Configurat
 
 If the backend database is PostgreSQL, there's no need for additional dependencies.
 
-If the backend database is MySQL, download [MySQL Connector/J](https://cdn.mysql.com//Downloads/Connector-J/mysql-connector-java-5.1.47.tar.gz) 
-and decompress, then copy `mysql-connector-java-5.1.47.jar` to `%SHARDINGSPHERE_PROXY_HOME%/lib` directory.
+If the backend database is MySQL, please download [mysql-connector-java-5.1.47.jar](https://repo1.maven.org/maven2/mysql/mysql-connector-java/5.1.47/mysql-connector-java-5.1.47.jar) and put it into `%SHARDINGSPHERE_PROXY_HOME%/lib` directory.
 
 ## 3. Start Server
 

docs/document/content/quick-start/shardingsphere-scaling-quick-start.cn.md

@@ -12,8 +12,7 @@ weight = 3
 
 如果后端连接 PostgreSQL 数据库，不需要引入额外依赖。
 
-如果后端连接 MySQL 数据库，需要下载 [MySQL Connector/J](https://cdn.mysql.com//Downloads/Connector-J/mysql-connector-java-5.1.47.tar.gz)，
-解压缩后，将 `mysql-connector-java-5.1.47.jar` 拷贝到 `%SHARDINGSPHERE_SCALING_HOME%/lib` 目录。
+如果后端连接 MySQL 数据库，请下载 [mysql-connector-java-5.1.47.jar](https://repo1.maven.org/maven2/mysql/mysql-connector-java/5.1.47/mysql-connector-java-5.1.47.jar)，并将其放入 `%SHARDINGSPHERE_SCALING_HOME%/lib` 目录。
 
 ## 3. 启动服务
 

docs/document/content/quick-start/shardingsphere-scaling-quick-start.en.md

@@ -12,8 +12,7 @@ Edit `%SHARDINGSPHERE_SCALING_HOME%/conf/server.yaml`. Please refer to [Configur
 
 If the backend database is PostgreSQL, there's no need for additional dependencies.
 
-If the backend database is MySQL, download [MySQL Connector/J](https://cdn.mysql.com//Downloads/Connector-J/mysql-connector-java-5.1.47.tar.gz) 
-and decompress, then copy `mysql-connector-java-5.1.47.jar` to `%SHARDINGSPHERE_SCALING_HOME%/lib` directory.
+If the backend database is MySQL, please download [mysql-connector-java-5.1.47.jar](https://repo1.maven.org/maven2/mysql/mysql-connector-java/5.1.47/mysql-connector-java-5.1.47.jar) and put it into `%SHARDINGSPHERE_SCALING_HOME%/lib` directory.
 
 ## 3. Start Server
 

docs/document/content/user-manual/shardingsphere-scaling/usage.cn.md

@@ -19,8 +19,7 @@ weight = 2
 
 **注意**：
 
-如果后端连接 MySQL 数据库，需要下载[MySQL Connector/J](https://cdn.mysql.com//Downloads/Connector-J/mysql-connector-java-5.1.47.tar.gz)，
-解压缩后，将 mysql-connector-java-5.1.47.jar 拷贝到 `${shardingsphere-scaling}\lib` 目录。
+如果后端连接 MySQL 数据库，请下载 [mysql-connector-java-5.1.47.jar](https://repo1.maven.org/maven2/mysql/mysql-connector-java/5.1.47/mysql-connector-java-5.1.47.jar)，并将其放入 `${shardingsphere-scaling}\lib` 目录。
 
 ### 权限要求
 

docs/document/content/user-manual/shardingsphere-scaling/usage.en.md

@@ -19,8 +19,7 @@ The migration scene we support：
 
 **Attention**: 
 
-If the backend database is MySQL, download [MySQL Connector/J](https://cdn.mysql.com//Downloads/Connector-J/mysql-connector-java-5.1.47.tar.gz) 
-and decompress, then copy mysql-connector-java-5.1.47.jar to `${shardingsphere-scaling}\lib directory`.
+If the backend database is MySQL, please download [mysql-connector-java-5.1.47.jar](https://repo1.maven.org/maven2/mysql/mysql-connector-java/5.1.47/mysql-connector-java-5.1.47.jar) and put it into `${shardingsphere-scaling}\lib directory`.
 
 ### Privileges