misc: update README

Author: Miaxos

README.md

@@ -15,8 +15,11 @@ async-graphql-extension-apollo-tracing
       alt="Download" />
   </a>
 </div>
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+<br />
 
-async-graphql-extension-apollo-tracing is an open-source extension for the crates [async_graphql](https://github.com). The purpose of this extension is to provide a simple way to create & send your graphql metrics to [Apollo Studio](https://studio.apollographql.com/).
+
+async-graphql-extension-apollo-tracing is an open-source extension for the crates [async_graphql](https://github.com/async-graphql/async-graphql). The purpose of this extension is to provide a simple way to create & send your graphql metrics to [Apollo Studio](https://studio.apollographql.com/).
 
 
 ![Apollo Studio with async_graphql](apollo-studio.png?raw=true "Apollo Studio with async_graphql")