fix(docs): improving welcome and contribution pages

docs/CONTRIBUTION.md

@@ -1,10 +1,10 @@
-## Contributing
+# Contribution
 
 Design System is maintained by LiveChat Design System team.
 
 Any external contribution is welcome and DS team will help in the process of development or [reporting problems or ideas](https://github.com/livechat/design-system/issues/new/choose). Design system is a [proposed solution](https://developers.livechat.com/docs/monetization/app-review-process#design-system) for authors building application targeting [LiveChat Marketplace](https://www.livechat.com/marketplace/), therefore, we're open for any feedback from 3rd party developers.
 
-### Rules of contribution
+## Rules of contribution
 
 1. In order to start working on changes, you must first create an issue on our [board](https://github.com/orgs/livechat/projects/7/views/1?filterQuery=),
    using one of the templates depending on if this is a feature request or bug report [here](https://github.com/livechat/design-system/issues/new/choose). If an

packages/react-components/src/docs/documentation/welcome.stories.mdx

@@ -103,4 +103,4 @@ For more information please check our [Product Design and UX](https://www.figma.
 # How to contribute
 
 Design System is always open for direct contributions. Contributions can be in the form of design suggestions, documentation improvements, new component suggestions, code improvements, adding new features or fixing problems.
-For more information please check our [Contributing Guide]()
+For more information please check our [Contributing Guide](/docs/documentation-contribution--docs)