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correct CLTV's note description

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I think CLTV is output-level locktime. so it should be corrected
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trustkim 2018-02-09 18:11:58 +09:00 committed by GitHub
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@ -325,7 +325,7 @@ More precisely, +CHECKLOCKTIMEVERIFY+ fails and halts execution, marking the tra
[NOTE]
====
+CLTV+ and +nLocktime+ use the same format to describe timelocks, either a block height or the time elapsed in seconds since Unix epoch. Critically, when used together, the format of +nLocktime+ must match that of +CLTV+ in the inputs—they must both reference either block height or time in seconds.
+CLTV+ and +nLocktime+ use the same format to describe timelocks, either a block height or the time elapsed in seconds since Unix epoch. Critically, when used together, the format of +nLocktime+ must match that of +CLTV+ in the outputs—they must both reference either block height or time in seconds.
====
After execution, if +CLTV+ is satisfied, the time parameter that preceded it remains as the top item on the stack and may need to be dropped, with +DROP+, for correct execution of subsequent script opcodes. You will often see +CHECKLOCKTIMEVERIFY+ followed by +DROP+ in scripts for this reason.