update link to use new doc domain

src/OpenFeature.Contrib.Providers.GOFeatureFlag/README.md

@@ -70,7 +70,7 @@ This code block explain how you can create an `EvaluationContext` and use it to
 
 > In this example we are evaluating a `boolean` flag, but other types are available.
 > 
-> **Refer to the [Open Feature documentation](https://docs.openfeature.dev/docs/reference/concepts/evaluation-api#basic-evaluation) to know more about it.**
+> **Refer to the [Open Feature documentation](https://openfeature.dev/docs/reference/concepts/evaluation-api#basic-evaluation) to know more about it.**
 
 ```csharp
 // Context of your flag evaluation.