docs: add DeepWiki link to README (#1432)

Author: alexandear

README.md

@@ -2,6 +2,7 @@
 
 [![Build Status](https://github.com/mgechev/revive/actions/workflows/test.yaml/badge.svg)](https://github.com/mgechev/revive/actions/workflows/test.yaml)
 [![Go Reference](https://pkg.go.dev/badge/github.com/mgechev/revive.svg)](https://pkg.go.dev/github.com/mgechev/revive)
+[![Ask DeepWiki](https://deepwiki.com/badge.svg)](https://deepwiki.com/mgechev/revive)
 
 Fast, configurable, extensible, flexible, and beautiful linter for Go. Drop-in replacement of golint.
 **`Revive` provides a framework for development of custom rules,