Ooops, sorry... I cannot edit the URL in the submission. I should have checked.

No it's fine, it thoroughly amused a HN nerd like me. I've been keeping track of how HN works for well over a decade, and noticing small changes like this is something that's genuinely gratifying. The mods will no doubt be by to clean up the url shortly.

I'm just relieved you can submit anchored URLs now. I once stayed up for a few hours trying to submit some work I made as a github comment only to be disappointed that it would always redirect to the toplevel issue.

You can always send a short polite email to hn@ycombinator.com with corrections you can't make yourself