📖Golang 1.24+ in setup-envtest/README.md (kubernetes-sigs#3181)

* Golang 1.24+ in setup-envtest/README.md

* Small update on README.md

* Small update on README.md

Author: erichorwath

tools/setup-envtest/README.md

@@ -4,17 +4,17 @@ This is a small tool that manages binaries for envtest. It can be used to
 download new binaries, list currently installed and available ones, and
 clean up versions.
 
-To use it, just go-install it with Golang 1.23+ (it's a separate, self-contained
+To use it, just go-install it with Golang 1.24+ (it's a separate, self-contained
 module):
 
 ```shell
 go install sigs.k8s.io/controller-runtime/tools/setup-envtest@latest
 ```
 
-If you are using Golang 1.22, use the `release-0.18` branch instead:
+If you are using Golang 1.23, use the `release-0.20` branch instead:
 
 ```shell
-go install sigs.k8s.io/controller-runtime/tools/setup-envtest@release-0.18
+go install sigs.k8s.io/controller-runtime/tools/setup-envtest@release-0.20
 ```
 
 For full documentation, run it with the `--help` flag, but here are some