Suggest golangci-lint in README.md as well as doc.go

Co-authored-by: Olivier Mengué <dolmen@cpan.org>

README.md

@@ -18,7 +18,7 @@ Get started:
   * Install testify with [one line of code](#installation), or [update it with another](#staying-up-to-date)
   * For an introduction to writing test code in Go, see https://go.dev/doc/code#Testing
   * Check out the API Documentation https://pkg.go.dev/github.com/stretchr/testify
-  * Use [testifylint](https://github.com/Antonboom/testifylint) to avoid common mistakes
+  * Use [testifylint](https://github.com/Antonboom/testifylint) (via [golanci-lint](https://golangci-lint.run/)) to avoid common mistakes
   * A little about [Test-Driven Development (TDD)](https://en.wikipedia.org/wiki/Test-driven_development)
 
 [`assert`](https://pkg.go.dev/github.com/stretchr/testify/assert "API documentation") package