/// Update to the [`NetworkGraph`] based on payment failure information conveyed via the Onion
/// return packet by a node along the route. See [BOLT #4] for details.
///
-/// [BOLT #4]: https://github.com/lightningnetwork/lightning-rfc/blob/master/04-onion-routing.md
+/// [BOLT #4]: https://github.com/lightning/bolts/blob/master/04-onion-routing.md
#[derive(Clone, Debug, PartialEq)]
pub enum NetworkUpdate {
/// An error indicating a `channel_update` messages should be applied via