Added link to HomelabOS documentation

docs/installation/index.rst

@@ -61,6 +61,7 @@ Funkwhale packages are available for the following platforms:
 - ArchLinux (as an AUR package): if you'd rather use a package, check out this alternative installation method on ArchLinux: https://wiki.archlinux.org/index.php/Funkwhale (package and wiki kindly maintained by getzee)
 - `NixOS <https://github.com/mmai/funkwhale-nixos>`_ (kindly maintained by @mmai)
 - `Helm chart <https://gitlab.com/ananace/charts/>`_ to install Funkwhale on Kubernetes (kindly maintained by `@ananace <https://gitlab.com/ananace>`_)
+- `HomelabOS <https://homelabos.com/docs/software/funkwhale/>`_
 
 Project architecture
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