f - Expand IncompatibleShutdownScript docs

Author: jkczyz

lightning/src/util/errors.rs

@@ -52,6 +52,9 @@ pub enum APIError {
 	/// [`KeysInterface::get_shutdown_scriptpubkey`] returned a shutdown scriptpubkey incompatible
 	/// with the channel counterparty as negotiated in [`InitFeatures`].
 	///
+	/// Using a SegWit v0 script should resolve this issue. If you cannot, you won't be able to open
+	/// a channel or cooperatively close one with this peer (and will have to force-close instead).
+	///
 	/// [`KeysInterface::get_shutdown_scriptpubkey`]: crate::chain::keysinterface::KeysInterface::get_shutdown_scriptpubkey
 	/// [`InitFeatures`]: crate::ln::features::InitFeatures
 	IncompatibleShutdownScript {