Update asymmetric debounce code comment (#22981)

quantum/debounce/asym_eager_defer_pk.c

@@ -18,8 +18,9 @@
  */
 
 /*
-Basic symmetric per-key algorithm. Uses an 8-bit counter per key.
+Asymetric per-key algorithm. After pressing a key, it immediately changes state,
-When no state changes have occured for DEBOUNCE milliseconds, we push the state.
+with no further inputs accepted until DEBOUNCE milliseconds have occurred. After
+releasing a key, that state is pushed after no changes occur for DEBOUNCE milliseconds.
 */
 
 #include "debounce.h"