Small grammar fix on GraphQL Clients page

Author: cjlarose

site/graphql-js/Tutorial-GraphQLClients.md

@@ -6,7 +6,7 @@ permalink: /graphql-js/graphql-clients/
 next: /graphql-js/basic-types/
 ---
 
-Since a GraphQL API has more underlying structure than a REST API, there are more powerful clients like [Relay](https://facebook.github.io/relay/) which can automatically handling batching, caching, and other features. But you don't need a complex client to call a GraphQL server. With `express-graphql`, you can just send an HTTP POST request to the endpoint you mounted your GraphQL server on, passing the GraphQL query as the `query` field in a JSON payload.
+Since a GraphQL API has more underlying structure than a REST API, there are more powerful clients like [Relay](https://facebook.github.io/relay/) which can automatically handle batching, caching, and other features. But you don't need a complex client to call a GraphQL server. With `express-graphql`, you can just send an HTTP POST request to the endpoint you mounted your GraphQL server on, passing the GraphQL query as the `query` field in a JSON payload.
 
 For example, let's say we mounted a GraphQL server on [http://localhost:4000/graphql](http://localhost:4000/graphql) as in the example code for [running an Express GraphQL server](/graphql-js/running-an-express-graphql-server/), and we want to send the GraphQL query `{ hello }`. We can do this from the command line with `curl`. If you paste this into a terminal: