fix broken GitHub link

Author: Urigo

src/content/code/language-support/c-net/server/entity-graphql.md

@@ -1,8 +1,8 @@
 ---
 name: Entity GraphQL
 description: .NET Core GraphQL library. Compiles to IQueryable to easily expose a schema from an existing data model (E.g. from an Entity Framework data model)
-url: https://github.com/lukemurray/EntityGraphQL
-github: lukemurray/EntityGraphQL
+url: https://github.com/EntityGraphQL/EntityGraphQL
+github: EntityGraphQL/EntityGraphQL
 ---