golangci-lint is a broken link in CONTRIBUTING.md

The link in the CONTRIBUTING.md goes to a broken url with a 404 error. 
```
[install golangci-lint](https://golangci-lint.run/usage/install/#local-installation)
```
should become
```
[install golangci-lint](https://golangci-lint.run/welcome/install/)
```
so the new URL will be https://golangci-lint.run/welcome/install/