Fix broken URL links in books section

src/pages/community/resources/books.mdx

@@ -2,10 +2,10 @@
 
 - [The GraphQL Guide](https://graphql.guide) by John Resig and Loren Sands-Ramshaw
 - [Learning GraphQL](https://www.amazon.com/Learning-GraphQL-Declarative-Fetching-Modern/dp/1492030716/) by Eve Porcello and Alex Banks
-- [Fullstack GraphQL](https://www.graphql.college/fullstack-graphql) by Julian Mayorga
-- [Craft GraphQL APIs in Elixir with Absinthe](https://pragprog.com/book/wwgraphql/craft-graphql-apis-in-elixir-with-absinthe) by Bruce Williams and Ben Wilson
-- [Learning GraphQL and Relay](https://www.packtpub.com/web-development/learning-graphql-and-relay) by Samer Buna
-- [Hands-on Full-Stack Web Development with GraphQL and React](https://www.packtpub.com/web-development/hands-full-stack-web-development-graphql-and-react) by Sebastian Grebe
+- [Fullstack GraphQL](https://www.graphqladmin.com/books/fullstack-graphql) by Julian Mayorga
+- [Craft GraphQL APIs in Elixir with Absinthe](https://pragprog.com/titles/wwgraphql/craft-graphql-apis-in-elixir-with-absinthe/) by Bruce Williams and Ben Wilson
+- [Learning GraphQL and Relay](https://www.amazon.com/Learning-GraphQL-Relay-Samer-Buna/dp/1786465752) by Samer Buna
+- [Hands-on Full-Stack Web Development with GraphQL and React](https://www.packtpub.com/en-us/product/hands-on-full-stack-web-development-with-graphql-and-react-9781789135763) by Sebastian Grebe
 - [The Road to GraphQL](https://www.robinwieruch.de/the-road-to-graphql-book/) by Robin Wieruch
 - [Production Ready GraphQL](https://book.productionreadygraphql.com/) by Marc-Andre Giroux
 - [GraphQL Best Practices: Hands-on experience with schema design, security, and error handling for developers](https://www.amazon.com/dp/B0D9H7MJQV) by Artur Czemiel, Nov 2024