fix links on index page

Author: dimaMachina

website/pages/docs/index.mdx

@@ -7,12 +7,12 @@ GraphQL.JS is the reference implementation to the [GraphQL Specification](https:
 while closely following the Specification.
 
 You can build GraphQL servers, clients, and tools with this library, it's designed so you can choose which parts you use, for example, you can build your own parser
-and use the execution/validation from the library. There also a lot of useful utilities for schema-diffing, working with arguments and [many more](./utilities.mdx).
+and use the execution/validation from the library. There also a lot of useful utilities for schema-diffing, working with arguments and many more.
 
 In the following chapters you'll find out more about the three critical pieces of this library
 
 - The GraphQL language
 - Document validation
 - GraphQL Execution
 
-You can also code along on [a tutorial](./getting-started.mdx).
+You can also code along on [a tutorial](/docs/getting-started).