Remove duplicate "the" (graphql#1828)

Author: benjie

src/pages/learn/index.mdx

@@ -36,7 +36,7 @@ function User_name(user, args, context, info) {
 }
 ```
 
-In the example above, the function that provides data for the `me` field on the `Query` type uses information about the authenticated user who made the request, while the the `name` field on the `User` type is populated by using that user's ID to fetch their full name from a database.
+In the example above, the function that provides data for the `me` field on the `Query` type uses information about the authenticated user who made the request, while the `name` field on the `User` type is populated by using that user's ID to fetch their full name from a database.
 
 ## Query exactly what you need