fix link

Author: khadni

src/content/cre/reference/sdk/http-client-go.mdx

@@ -55,7 +55,7 @@ The `Timeout` field specifies how long to wait for an HTTP request to complete b
 
 **Format:**
 
-- Use `*durationpb.Duration` from the [`google.golang.org/protobuf/types/known/durationpb` package](google.golang.org/protobuf/types/known/durationpb)
+- Use `*durationpb.Duration` from the [`google.golang.org/protobuf/types/known/durationpb` package](https://pkg.go.dev/google.golang.org/protobuf/types/known/durationpb)
 - Create using `durationpb.New()` with a `time.Duration` value
 - Or manually construct with `&durationpb.Duration{Seconds: int64}`