Merge pull request graphql#798 from murtukov/patch-1

Add a Symfony bundle into the PHP section

Author: caniszczyk

site/code/index.html.js

@@ -341,7 +341,8 @@ Apollo Server also supports all Node.js HTTP server frameworks: Express, Connect
 
   - [graphql-php](https://github.com/webonyx/graphql-php): A PHP port of GraphQL reference implementation
   - [graphql-relay-php](https://github.com/ivome/graphql-relay-php): A library to help construct a graphql-php server supporting react-relay.
-  - [Lighthouse](https://github.com/nuwave/lighthouse): GraphQL Server for Laravel
+  - [Lighthouse](https://github.com/nuwave/lighthouse): A GraphQL server for Laravel
+  - [GraphQLBundle](https://github.com/overblog/GraphQLBundle): A GraphQL server for Symfony
 
 #### [API Platform](https://api-platform.com) ([github](https://github.com/api-platform/api-platform))