[docs] Fix broken links (#4778)

* README

* Footer links

* 7-0-0 to previous-versions in README

README.md

@@ -11,9 +11,9 @@
 ## Links
 
 - [Documentation](https://mantine.dev/)
-- [Contributing](https://mantine.dev/pages/contributing/)
+- [Contribute](https://mantine.dev/contribute)
 - [Ask question or give feedback](https://github.com/mantinedev/mantine/discussions)
-- [Changelog](https://mantine.dev/pages/changelog/)
+- [Changelog](https://mantine.dev/changelog/previous-versions)
 - [Follow on Twitter](https://twitter.com/mantinedev)
 - [Join Discord community](https://discord.gg/wbH82zuWMN)
 
@@ -50,7 +50,7 @@ Mantine has a very friendly community, we are always happy to help you get start
   <img src="https://contrib.rocks/image?repo=mantinedev/mantine" />
 </a>
 
-[Become a contributor](https://mantine.dev/pages/contributing/)
+[Become a contributor](https://mantine.dev/contribute)
 
 ## License
 

docs/components/Footer/data.ts

@@ -5,9 +5,9 @@ export const FOOTER_LINKS_DATA: LinksGroupProps[] = [
   {
     title: 'About',
     data: [
-      { type: 'next', label: 'Contribute', link: '/pages/contributing/' },
-      { type: 'next', label: 'About Mantine', link: '/pages/about/' },
-      { type: 'next', label: 'Changelog', link: '/pages/changelog/' },
+      { type: 'next', label: 'Contribute', link: '/contribute' },
+      { type: 'next', label: 'About Mantine', link: '/about' },
+      { type: 'next', label: 'Changelog', link: '/changelog/previous-versions' },
       { type: 'link', label: 'Releases', link: meta.gitHubLinks.releases },
     ],
   },