Document installation of v2

Author: williammartin

CONTRIBUTING.md

@@ -15,7 +15,7 @@ Please note that this project is released with a [Contributor Code of Conduct](C
 These are one time installations required to be able to test your changes locally as part of the pull request (PR) submission process.
 
 1. install Go [through download](https://go.dev/doc/install) | [through Homebrew](https://formulae.brew.sh/formula/go)
-1. [install golangci-lint](https://golangci-lint.run/welcome/install/#local-installation)
+1. [install golangci-lint v2](https://golangci-lint.run/welcome/install/#local-installation)
 
 ## Submitting a pull request