Details about starting dev server Next.js docs. (vercel#32002)

The details about starting a development server and viewing your changes locally are wrongly placed in the Getting Started section in the Next.js Docs. Currently, it resides under the "Manual Setup" section. Ideally, it should be under the "Setup" section.

## Feature

- [x] Related issues linked using vercel#31998
- [x] Documentation added

## Documentation / Examples

- [x] Make sure the linting passes by running `yarn lint`


Co-authored-by: JJ Kasper <22380829+ijjk@users.noreply.github.com>

Author: MaedahBatool

docs/getting-started.md

@@ -35,7 +35,11 @@ npx create-next-app@latest --typescript
 yarn create next-app --typescript
 ```
 
-After the installation is complete, follow the instructions to start the development server. Try editing `pages/index.js` and see the result on your browser.
+After the installation is complete:
+
+- Run `npm run dev` or `yarn dev` to start the development server on `http://localhost:3000`.
+- Visit `http://localhost:3000` to view your application.
+- Edit `pages/index.js` and see the updated result in your browser.
 
 For more information on how to use `create-next-app`, you can review the [`create-next-app` documentation](/docs/api-reference/create-next-app.md)
 
@@ -83,10 +87,6 @@ function HomePage() {
 export default HomePage
 ```
 
-To start developing your application run `npm run dev` or `yarn dev`. This starts the development server on `http://localhost:3000`.
-
-Visit `http://localhost:3000` to view your application.
-
 So far, we get:
 
 - Automatic compilation and bundling (with webpack and babel)