slide names ending with numbers are breaking

[rjsparks]

Right now, https://datatracker.ietf.org/meeting/115/materials/slides-115-dnsop-the-alt-special-use-top-level-domain-draft-ietf-dnsop-alt-tld-18 404s. It shouldn't.

https://datatracker.ietf.org/doc/slides-115-dnsop-the-alt-special-use-top-level-domain-draft-ietf-dnsop-alt-tld-18/ works fine, and from there, you can get to https://datatracker.ietf.org/meeting/115/materials/slides-115-dnsop-the-alt-special-use-top-level-domain-draft-ietf-dnsop-alt-tld-18-00.pdf

The issue is likely the document name ending in something that looks like a version.

[rjsparks]

cc @paulehoffman