update TS docs to reflect connect Opts

as mentioned here #10632

Author: theonlydaleking

docs/typescript.md

@@ -37,10 +37,7 @@ run().catch(err => console.log(err));
 
 async function run(): Promise<void> {
   // 4. Connect to MongoDB
-  await connect('mongodb://localhost:27017/test', {
-    useNewUrlParser: true,
-    useUnifiedTopology: true
-  });
+  await connect('mongodb://localhost:27017/test');
 
   const doc = new UserModel({
     name: 'Bill',
@@ -90,4 +87,4 @@ However, before you do, please [open an issue on Mongoose's GitHub page](https:/
 
 ### Next Up
 
-Now that you've seen the basics of how to use Mongoose in TypeScript, let's take a look at [statics in TypeScript](/docs/typescript/statics.html).
+Now that you've seen the basics of how to use Mongoose in TypeScript, let's take a look at [statics in TypeScript](/docs/typescript/statics.html).