update getting started

Author: junzyx

apps/docs/getting-started.mdx

@@ -29,27 +29,7 @@ bunx htmldocs@latest init
 
 This will prompt you for your project name and create a new folder in your current directory.
 
-2. After switching to the folder, install the dependencies by running:
-<CodeGroup>
-
-```bash npm
-npm install
-```
-
-```bash pnpm
-pnpm install
-```
-
-```bash yarn
-yarn install
-```
-
-```bash bun
-bun install
-```
-</CodeGroup>
-
-3. Once the setup is complete, you can start the development server by running:
+3. After switching to the folder, you can start the development server by running:
 <CodeGroup>
 
 ```bash npm
@@ -126,8 +106,24 @@ export default function MyDocument() {
 
 4. Run the development server by running:
 
-```bash
+<CodeGroup>
+
+```bash npm
 npm run dev
 ```
 
+```bash pnpm
+pnpm dev
+```
+
+```bash yarn
+yarn dev
+```
+
+```bash bun
+bun dev
+```
+
+</CodeGroup>
+
 This will start a live preview of your documents in your browser.