Sonarr / Radarr / Lidarr - adjust dietpi-arr_to_RAM guide

[Joulinar]

Hi @MichaIng,

I guess we would need to adjust the guide on how to "Link databases to RAM". Actually we link a forum post https://dietpi.com/phpbb/viewtopic.php?t=5828

I guess this one is outdated with recent changes done on dietpi-arr_to_RAM. Maybe we should add dietpi-arr_to_RAM into DietPi Tools section as own tool??

[MichaIng]

Thanks for the reminder, indeed important and one of the last forum docs hat have not been ported yet. I'll start with it in the evening.