Update broadcaster interface examples

Author: Conor Okus

docs/tutorials/building-a-node-with-ldk/introduction.md

@@ -1,16 +1,16 @@
 # Building a Node with LDK
 
-## Learn how to build a basic LDK node from scratch 
+## Learn how to build a basic LDK node from scratch
 
 ::: tip Note
 For an integrated example of an LDK node in Rust, see the [Sample Node](https://github.com/lightningdevkit/ldk-sample)
 :::
 
 The following tutorials will show you how to build the simplest lightning node using LDK, that fufills the following tasks:
 
-1. **Connecting to Peers** 
-2. **Open Channels** 
-3. **Send Payments** 
+1. **Connecting to Peers**
+2. **Open Channels**
+3. **Send Payments**
 4. **Receive Payments**
 5. **Close Channels**
 
@@ -23,13 +23,14 @@ Let's start by looking at the core components we'll need to make this node work
 3. Payments & Routing, ability to create and pay invoices.
 
 To make the above work we also need to setup a series of supporting modules, including:
+
 1. A [`FeeEstimator`](https://docs.rs/lightning/*/lightning/chain/chaininterface/trait.FeeEstimator.html)
 2. A [`Logger`](https://docs.rs/lightning/*/lightning/util/logger/index.html)
 3. A Transaction [`Broadcaster`](https://docs.rs/lightning/*/lightning/chain/chaininterface/trait.BroadcasterInterface.html)
 4. A [`NetworkGraph`](https://docs.rs/lightning/*/lightning/routing/gossip/struct.NetworkGraph.html)
 5. A [`Persister`](https://docs.rs/lightning/*/lightning/util/persist/trait.Persister.html)
-6. An [`EventHandler`](https://docs.rs/lightning/*/lightning/util/events/trait.EventHandler.html)
+6. An [`EventHandler`](https://docs.rs/lightning/*/lightning/events/trait.EventHandler.html)
 7. A Transaction [`Filter`](https://docs.rs/lightning/*/lightning/chain/trait.Filter.html)
 8. A [`ChainMonitor`](https://docs.rs/lightning/*/lightning/chain/chainmonitor/index.html)
-9. A [`KeysManager`](https://docs.rs/lightning/*/lightning/chain/keysinterface/struct.KeysManager.html)
+9. A [`KeysManager`](https://docs.rs/lightning/*/lightning/sign/struct.KeysManager.html)
 10. A [`Scorer`](https://docs.rs/lightning/*/lightning/routing/scoring/index.html)