docs: add notes for password handling in Node.js (#30267)

docs/en/27-train-faq/03-password.md

@@ -229,6 +229,8 @@ let connection = TaosBuilder::from_dsn(&dsn)?.build().await?;
 </TabItem>
 <TabItem label="Node.js" value="node">
 
+Starting from version 3.1.5, the Node.js connector supports passwords containing all valid characters.
+
 ```js
 const taos = require("@tdengine/websocket");
 

docs/zh/27-train-faq/03-password.md

@@ -229,6 +229,8 @@ let connection = TaosBuilder::from_dsn(&dsn)?.build().await?;
 </TabItem>
 <TabItem label="Node.js" value="node">
 
+从 3.1.5 版本开始，Node.js 连接器支持密码中包含特殊字符无需特殊处理。
+
 ```js
 const taos = require("@tdengine/websocket");