docs(graphql): fix update

Author: Tony133

content/graphql/quick-start.md

@@ -58,7 +58,7 @@ export class AppModule {}
 
 As mentioned, these options will be forwarded to the `ApolloServer` constructor.
 
-> warning **Warning** If you use the `apollo-server-fastify` package with multiple GraphQL endpoints in a single app, enable the `disableHealthCheck` setting to` true` in the configuration` GraphQLModule`.
+> warning **Warning** If you use the `apollo-server-fastify` package with multiple GraphQL endpoints in a single application, enable the `disableHealthCheck` setting to` true` in the configuration` GraphQLModule`.
 
 <app-banner-enterprise></app-banner-enterprise>