ansi2html output is damaged

This is a very strange bug. This is screen from current `cheat.sh` version that I've just built and run locally through `docker-compose`. Note the broken link https://github.com/chubin/issues/14 which should lead to #14.


Now, if we look at the source, the actual broken link ends with `issues/140` and it was that from the start.

Note the https://github.com/chubin/cheat.sh/blob/9f99bec1f0293e84d6d8a990a1940c1422e3b0ce/lib/adapter/upstream.py#L30

With the exception of missing `/cheat.sh/` part in URL, the link seems legit. Perhaps my `docker-compose` fetched the content from some server where the content was fixed, but not committed. But fetching the same local URL with `curl` shows 140 and not 14.


I have no idea why 0 is stripped in html output. At all looks very strange.

Start with lib/adapter/upstream.py#L30 and compare the source URL containing issues/140 with the ansi2html-rendered output. Reproduce the conversion locally using the Docker Compose setup and curl, then trace why the trailing 0 disappears. Done means links such as the one targeting issue 140 remain unchanged in HTML output.

Written by the indexing model from the issue text.