add zincobserve link (#773)

* add zincobserve link

* spell fix

README.md

@@ -1,6 +1,7 @@
 [![Go Report Card](https://goreportcard.com/badge/github.com/zinclabs/zincsearch)](https://goreportcard.com/report/github.com/zinclabs/zincsearch)
 [![Docs](https://img.shields.io/badge/Docs-Docs-green)](https://docs.zinc.dev/) [![codecov](https://codecov.io/github/zinclabs/zincsearch/branch/main/graph/badge.svg)](https://codecov.io/github/zinclabs/zincsearch)
 
+❗Note: If your use case is of log search (app and security logs) instead of app search (implement search feature in your application or website) then you should check [zinclabs/zincobserve](https://github.com/zinclabs/zincobserve) project that is specifically built for observability use case.
 # ZincSearch
 
 ZincSearch is a search engine that does full text indexing. It is a lightweight alternative to Elasticsearch and runs using a fraction of the resources. It uses [bluge](https://github.com/blugelabs/bluge) as the underlying indexing library.