Description:

I discovered, that the pacman hook /usr/share/libalpm/hooks/vimdoc.hook included in vim-runtime depends on the
/usr/bin/vim binary. This is a problem, since vim is not a requirement for the vim-runtime package, but the other way around.

When a user uninstalls vim, but not vim-runtime, so that only vim-runtime is installed (there may be other ways when this happens),
the pacman hook fails to execute, and generates an error e.g. on pacman -Syu.

Here is an exempt from the log:

```
(15/15) Updating Vim help tags...
Konnte execv nicht aufrufen (Datei oder Verzeichnis nicht gefunden)
Fehler: Befehl konnte nicht korrekt ausgeführt werden

```

Additional info:
* 9.0.1572-1 (probably irrelevant)

Steps to reproduce:
* Install only vim-runtime
* Upgrade a package that triggers the /usr/share/libalpm/hooks/vimdoc.hook hook