docs: missing indications of package for raspberrypi

[kristianpaul]

https://github.com/qaul/qaul-website/blame/45fb5f7c5f51614bdaa43d15f3533c8422cf5b43/content/tutorials/community-node/index.md#L34

Missing instructions on installing the armfh asset already avaliable for debian/raspberrypi systems

[MathJud]

Any Ideas how this could be done best?
Should there be an individual line for each version?