Merge pull request graphql#246 from APIs-guru/source

Add graphql-apis list

Author: robzhu

site/community/Community-Resources.md

@@ -88,3 +88,4 @@ To explore other community-developed resources and content about GraphQL, take a
 - [Building Apollo](https://medium.com/apollo-stack)
 - [Learn GraphQL](https://learngraphql.com/basics/introduction)
 - [awesome-graphql](https://github.com/chentsulin/awesome-graphql): A fantastic community maintained collection of libraries, resources, and more.
+- [graphql-apis](https://github.com/APIs-guru/graphql-apis): A collective list of public GraphQL APIs.