chore: add resource under golang:go-advanced:working-with-json

src/data/roadmaps/golang/content/101-go-advanced/101-working-with-json.md

@@ -7,3 +7,4 @@ Visit the following resources to learn more:
 - [JSON](https://go.dev/blog/json)
 - [Guide to JSON in Golang](https://www.sohamkamani.com/golang/json/)
 - [JSON to GO](https://mholt.github.io/json-to-go/)
+- [Comprehensive Guide to using JSON in Go](https://betterstack.com/community/guides/scaling-go/json-in-go/)