Contributing Guide Link Broken in readme.md

[haxr]

The link to the Contributing Guide in the readme.md is broken:

dbatools/readme.md

Line 334 in 9039a5b

We'd love to have you join us! Check out our [Contributing Guide](contributing.md) and the [dbatools-dev Slack channel](https://sqlcommunity.slack.com/messages/C3EJ852JD/).

The actual filename is upper case CONTRIBUTING.md in the repo, but the link is pointing to lower case contributing.md.

Broken - Contributing Guide

vs

Working - Contributing Guide

Unsure if the file should be renamed to lowercase or if the readme.md file should be updated to the correct case.