Update README.md

Author: yaronf

README.md

@@ -33,3 +33,4 @@ in the [API reference](https://pkg.go.dev/github.com/yaronf/httpsign).
 [![Go Reference](https://pkg.go.dev/badge/github.com/yaronf/httpsign.svg)](https://pkg.go.dev/github.com/yaronf/httpsign)
 [![Test](https://github.com/yaronf/httpsign/actions/workflows/test.yml/badge.svg)](https://github.com/yaronf/httpsign/actions/workflows/test.yml)
 [![GoReportCard example](https://goreportcard.com/badge/github.com/yaronf/httpsign)](https://goreportcard.com/report/github.com/yaronf/httpsign)
+[![DeepWiki](https://deepwiki.com/badge-maker?url=https%3A%2F%2Fdeepwiki.com%2Fyaronf%2Fhttpsign)