chore: Comment update (#20820)

This PR simply updates a comment around contract update delays.

Author: PhilWindle

noir-projects/noir-contracts/contracts/app/auth_contract/src/main.nr

@@ -13,7 +13,7 @@ pub contract Auth {
     };
 
     // docs:start:delayed_public_mutable_storage
-    // Authorizing a new address has a certain delay before it goes into effect. Set to 180 seconds.
+    // Authorizing a new address has a certain delay before it goes into effect. Set to 360 seconds which is 5 slots.
     pub(crate) global CHANGE_AUTHORIZED_DELAY: u64 = 360;
 
     #[storage]