Merge pull request #8012 from mattleff/patch-1

[Doc] Fix typo in ra-data-graphql-simple docs

Author: fzaninotto

packages/ra-data-graphql-simple/README.md

@@ -211,7 +211,7 @@ buildApolloProvider({ introspection: introspectionOptions });
 
 ## `DELETE_MANY` and `UPDATE_MANY` Optimizations
 
-You GraphQL backend may not allow multiple deletions or updates in a single query. This provider simply makes multiple requests to handle those. This is obviously not ideal but can be alleviated by supplying your own `ApolloClient` which could use the [apollo-link-batch-http](https://www.apollographql.com/docs/link/links/batch-http.html) link if your GraphQL backend support query batching.
+Your GraphQL backend may not allow multiple deletions or updates in a single query. This provider simply makes multiple requests to handle those. This is obviously not ideal but can be alleviated by supplying your own `ApolloClient` which could use the [apollo-link-batch-http](https://www.apollographql.com/docs/link/links/batch-http.html) link if your GraphQL backend support query batching.
 
 ## Contributing