修正语法.

Signed-off-by: lion.chan <cy187lion@sina.com>

Software/Applications/MariaDB/MariaDB_安装配置与使用.md

@@ -125,7 +125,7 @@ CREATE USER 'm23100'@'%';
 # 如果要授予该用户对所有数据库和表的相应操作权限则可用 * 表示, 如 *.*
 GRANT privileges ON databasename.tablename TO 'username'@'host'
 # 示例
-GRANT ALL ON test.* TO username@'localhost' IDENTIFIED BY 'password';
+GRANT ALL ON test.* TO 'username'@'localhost' IDENTIFIED BY 'password';
 
 # 撤销用户权限
 REVOKE privilege ON databasename.tablename FROM 'username'@'host';
@@ -151,7 +151,7 @@ UPDATE mysql.user set plugin='mysql_native_password';
 UPDATE mysql.user set password=PASSWORD("newpassword") where User='root';
 # 刷新权限信息
 FLUSH privileges;
-exit
+exit;
 ```
 
 ```bash