Switch from vg to hh.

[MImmesberger]

What problem do you want to solve?

Closes #674

Todo

• [x] Pick an appropriate title.
• [x] Put Closes #XXXX in the first PR comment to auto-close the relevant issue once the PR is accepted. This is not applicable if there is no corresponding issue.
• [x] Document PR in CHANGES.md.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (1ac4f94) 91.55% compared to head (82d2b87) 91.55%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #675 +/- ## ======================================= Coverage 91.55% 91.55% ======================================= Files 51 51 Lines 3446 3446 ======================================= Hits 3155 3155 Misses 291 291 ```

:umbrella: View full report in Codecov by Sentry.
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[lars-reimann]

There are still a few occurrences of vg. You can find them by searching for the regular expression (?<!\w)vg.

[MImmesberger]

You can find them by searching for the regular expression (?<!\w)vg.

Thanks!