README: add conf_target to loop in readme section
@@ -197,6 +197,7 @@ DESCRIPTION:
OPTIONS:
--amt value the amount in satoshis to loop in (default: 0)
--external expect htlc to be published externally
+ --conf_target the confirmation target for the on chain htlc, if not being published externally
```
The `--external` argument allows the on-chain HTLC transacting to be published
