more tidying on v5 example and request type

examples/rest-v5-private.ts

@@ -0,0 +1,27 @@
+import { RestClientV5 } from '../src/index';
+
+// or
+// import { RestClientV5 } from 'bybit-api';
+
+const key = process.env.API_KEY_COM;
+const secret = process.env.API_SECRET_COM;
+
+const client = new RestClientV5({
+  key,
+  secret,
+  strict_param_validation: true,
+});
+
+(async () => {
+  try {
+    /** Simple example for a private REST API call with bybit's V5 REST APIs */
+    const response = await client.getPositionInfo({
+      category: 'option',
+      symbol: 'BTCUSDT',
+    });
+
+    console.log('response:', response);
+  } catch (e) {
+    console.error('request failed: ', e);
+  }
+})();