doc: fix: prevHeights entries are set to 0, not removed

Author: stickies-v

src/consensus/tx_verify.h

@@ -63,8 +63,8 @@ bool IsFinalTx(const CTransaction &tx, int nBlockHeight, int64_t nBlockTime);
 /**
  * Calculates the block height and previous block's median time past at
  * which the transaction will be considered final in the context of BIP 68.
- * Also removes from the vector of input heights any entries which did not
- * correspond to sequence locked inputs as they do not affect the calculation.
+ * For each input that is not sequence locked, the corresponding entries in
+ * prevHeights are set to 0 as they do not affect the calculation.
  */
 std::pair<int, int64_t> CalculateSequenceLocks(const CTransaction &tx, int flags, std::vector<int>& prevHeights, const CBlockIndex& block);