f - update docs

Author: jkczyz

lightning/src/ln/channelmanager.rs

@@ -4688,7 +4688,8 @@ where
 	/// be re-spent.
 	///
 	/// Once the splice has been locked by both counterparties, an [`Event::ChannelReady`] will be
-	/// emitted with the new funding output.
+	/// emitted with the new funding output. At this point, a new splice can be negotiated by
+	/// calling `splice_channel` again on this channel.
 	#[rustfmt::skip]
 	pub fn splice_channel(
 		&self, channel_id: &ChannelId, counterparty_node_id: &PublicKey,