There's a merged pull request on the void-packages repository

Add hg.sr.ht to update_check.sh
https://github.com/void-linux/void-packages/pull/18781

Description:
hg.sr.ht project pages are laid out quite closely to GitHubs format. We
can basically clone the check for GitHub to a new base URL of hg.sr.ht .

```
env XBPS_UPDATE_CHECK_VERBOSE=1 xcheckmypkgs 
... <truncated output> ...
checking: wofi
fetching https://hg.sr.ht/~scoopta/wofi/tags
already fetched https://hg.sr.ht/~scoopta/wofi/tags
found version 1.0
```