Add instructions for TESTING

Author: NexusSfan

index.html

@@ -18,6 +18,8 @@
 
 Where <code>[system]</code> can be <code>debian</code>, <code>devuan</code>, or <code>ubuntu</code>.
 
+If you are using Debian Testing (Forky) or Devuan Testing (Freia) then use `Components: testing` instead.
+
 Now, run <code>curl -fsSL https://mrchicken.nexussfan.cz/publickey.asc | gpg --dearmor | sudo tee /usr/share/keyrings/NexusSfan.pgp > /dev/null</code>
 This will set up the publickey.