test: node example

docs/examples/node/connect.js

-const { options, connect } = require("td2.0-rest-connector");
+import { options, connect } from "@tdengine/rest";
 
 async function test() {
   options.url = process.env.TDENGINE_CLOUD_URL;
@@ -6,7 +6,7 @@ async function test() {
   let conn = connect(options);
   let cursor = conn.cursor();
   try {
-    let res = await cursor.query("select server_version()");
+    let res = await cursor.query("show databases()");
     res.toString();
   } catch (err) {
     console.log(err);

docs/examples/python/develop_tutorial.py

@@ -11,8 +11,6 @@ url = os.environ["TDENGINE_CLOUD_URL"]
 token = os.environ["TDENGINE_CLOUD_TOKEN"]
 
 conn = taosrest.connect(url=url, token=token)
-# test the connection by getting version info
-print("server version:", conn.server_info)
 # ANCHOR_END: connect
 # ANCHOR: insert
 # create super table