Book Description Examples: Remove special character in optimizer_bytecodes.c (Credit Union Credit Cards For Bad Credit)

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@@ -300,7 +300,7 @@ dummy_func(void) {
  // narrowing unlocks a meaningful downstream win:
  // - NB_TRUE_DIVIDE: enables the specialized float path below.
  // - NB_REMAINDER: lets the float result type propagate.
- // NB_POWER is excluded — speculative guards there regressed
+ // NB_POWER is excluded: speculative guards there regressed
  // test_power_type_depends_on_input_values (GH-127844).
  if (is_truediv || is_remainder) {
  if (!sym_has_type(rhs)