Fixed #61434 : Docs: Duplicated code snippets (#61446)

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### What?

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Closes NEXT-
Fixes #

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### What?

Issue - Docs: Duplicated code snippets

The code snippet is repeated, second snippet had to be with Link
component.

### How?
Replaced button with Link component.

Fixes #61434 - Docs: Duplicated code snippets

---------

Co-authored-by: Lee Robinson <me@leerob.io>
Co-authored-by: Sam Ko <sam@vercel.com>

docs/02-app/01-building-your-application/01-routing/10-parallel-routes.mdx

@@ -357,7 +357,7 @@ When the user clicks the `<Link>`, the modal will open instead of navigating to
 
 You can close the modal by calling `router.back()` or by using the `Link` component.
 
-```tsx filename="app/ui/modal.tsx switcher
+```tsx filename="app/ui/modal.tsx" switcher
 'use client'
 
 import { useRouter } from 'next/navigation'
@@ -380,7 +380,7 @@ export function Modal({ children }: { children: React.ReactNode }) {
 }
 ```
 
-```tsx filename="app/ui/modal.tsx switcher
+```jsx filename="app/ui/modal.js" switcher
 'use client'
 
 import { useRouter } from 'next/navigation'
@@ -391,7 +391,6 @@ export function Modal({ children }) {
   return (
     <>
       <button
-        type="button"
         onClick={() => {
           router.back()
         }}
@@ -404,6 +403,32 @@ export function Modal({ children }) {
 }
 ```
 
+```tsx filename="app/ui/modal.tsx" switcher
+import Link from 'next/link'
+
+export function Modal({ children }: { children: React.ReactNode }) {
+  return (
+    <>
+      <Link href="/">Close modal</Link>
+      <div>{children}</div>
+    </>
+  )
+}
+```
+
+```jsx filename="app/ui/modal.js" switcher
+import Link from 'next/link'
+
+export function Modal({ children }) {
+  return (
+    <>
+      <Link href="/">Close modal</Link>
+      <div>{children}</div>
+    </>
+  )
+}
+```
+
 > **Good to know:**
 >
 > - Other examples could include opening a photo modal in a gallery while also having a dedicated `/photo/[id]` page, or opening a shopping cart in a side modal.