docs: Add link to GraphQL API documentation

Author: jidicula

README.md

@@ -8,7 +8,7 @@ In this repository, you will find categories for various product areas. Feel fre
 |---	|---	|
 | 👍 [Accessibility](https://github.com/orgs/community/discussions/categories/accessibility) 	| [About Accessibility](https://docs.github.com/en/account-and-profile/setting-up-and-managing-your-personal-account-on-github/managing-personal-account-settings/managing-accessibility-settings#about-accessibility-settings) |
 | 🚢 [Actions](https://github.com/orgs/community/discussions/categories/actions) 	| [GitHub Actions](https://github.com/features/actions) |
-| 🔁 [API and Webhooks](https://github.com/orgs/community/discussions/categories/api-and-webhooks) 	| [GitHub API](https://docs.github.com/en/rest) and [GitHub Webhooks](https://docs.github.com/en/developers/webhooks-and-events/webhooks/about-webhook) |
+| 🔁 [API and Webhooks](https://github.com/orgs/community/discussions/categories/api-and-webhooks) 	| [GitHub REST API](https://docs.github.com/en/rest), [GitHub GraphQL API](https://docs.github.com/en/graphql), and [GitHub Webhooks](https://docs.github.com/en/developers/webhooks-and-events/webhooks/about-webhook) |
 | 🔎 [Code Search & Navigation](https://github.com/orgs/community/discussions/categories/code-search-and-navigation) 	| [Code Search & Navigation](https://cs.github.com/about) 	|
 | 💻 [Codespaces](https://github.com/orgs/community/discussions/categories/codespaces) 	| [GitHub Codespaces](https://github.com/features/codespaces) 	|
 | :copilot: [Copilot Conversations](https://github.com/orgs/community/discussions/categories/copilot-conversations) 	| [GitHub Copilot](https://copilot.github.com/) 	|