Updated motd for both x86_64 and aarch64.

x86_64/airootfs/etc/motd

@@ -1,10 +1,9 @@
-Welcome to Stormux, powered by Arch Linux ARM
+Welcome to Stormux, powered by Arch Linux
 
             Stormux Website: https://stormux.org
-       Arch Linux ARM Forum: https://archlinuxarm.org/forum
+       Arch Linux: https://archlinux.org
 
                 Stormux IRC: #stormux on irc.stormux.org
-         Arch Linux ARM IRC: #archlinuxarm on irc.libera.chat
 
-         Thank you Stormux supporters! https://ko-fi.com/stormux/leaderboard
+         Thank you Stormux supporters! https://patreon.com/stormux