Make day 20 comment more less dumb

src/bin/20.rs

@@ -149,8 +149,8 @@ fn solve(input: &str, is_p2: bool) -> Option<u64> {
  if is_p2 {
  // The solution for part 2 assumes the following:
  // - There is a single conjunction module that sends to rx
- // - There are four conjunction modules that send to the one that sends to rx
- // Therefore the LCM of the cycle counts of those four antepenultimate modules should be the answer.
+ // - The abovementioned module only receives signals from conjunction modules
+ // Therefore the LCM of the cycle counts of those antepenultimate modules should be the answer.
 
  // sender_to_rx is the module that sends to rx
  (sender_to_rx, _) = connections