Merge pull request nestjs#2927 from Nico385412/patch-1

fix: comparison url

content/graphql/quick-start.md

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 ## Harnessing the power of TypeScript & GraphQL
 
-[GraphQL](https://graphql.org/) is a powerful query language for APIs and a runtime for fulfilling those queries with your existing data. It's an elegant approach that solves many problems typically found with REST APIs. For background, we suggest reading this [comparison](https://dev-blog.apollodata.com/graphql-vs-rest-5d425123e34b) between GraphQL and REST. GraphQL combined with [TypeScript](https://www.typescriptlang.org/) helps you develop better type safety with your GraphQL queries, giving you end-to-end typing.
+[GraphQL](https://graphql.org/) is a powerful query language for APIs and a runtime for fulfilling those queries with your existing data. It's an elegant approach that solves many problems typically found with REST APIs. For background, we suggest reading this [comparison](https://www.apollographql.com/blog/graphql-vs-rest) between GraphQL and REST. GraphQL combined with [TypeScript](https://www.typescriptlang.org/) helps you develop better type safety with your GraphQL queries, giving you end-to-end typing.
 
 In this chapter, we assume a basic understanding of GraphQL, and focus on how to work with the built-in `@nestjs/graphql` module. The `GraphQLModule` can be configured to use [Apollo](https://www.apollographql.com/) server (with the `@nestjs/apollo` driver) and [Mercurius](https://github.com/mercurius-js/mercurius) (with the `@nestjs/mercurius`). We provide official integrations for these proven GraphQL packages to provide a simple way to use GraphQL with Nest (see more integrations [here](https://docs.nestjs.com/graphql/quick-start#third-party-integrations)).