docs/exit-node: fixup for 0.23

* Add newlines between commands to improve readability
* Use nodes instead on name
* Remove query parameter from link to Tailscale docs

docs/exit-node.md

@@ -21,21 +21,23 @@ To use a node as an exit node, IP forwarding must be enabled on the node. Check
 ```console
 $ # list nodes
 $ headscale routes list
-ID | Machine | Prefix    | Advertised | Enabled | Primary
-1  |         | 0.0.0.0/0 | false      | false   | -
-2  |         | ::/0      | false      | false   | -
-3  | phobos  | 0.0.0.0/0 | true       | false   | -
-4  | phobos  | ::/0      | true       | false   | -
+ID | Node   | Prefix    | Advertised | Enabled | Primary
+1  |        | 0.0.0.0/0 | false      | false   | -
+2  |        | ::/0      | false      | false   | -
+3  | phobos | 0.0.0.0/0 | true       | false   | -
+4  | phobos | ::/0      | true       | false   | -
+
 $ # enable routes for phobos
 $ headscale routes enable -r 3
 $ headscale routes enable -r 4
+
 $ # Check node list again. The routes are now enabled.
 $ headscale routes list
-ID | Machine | Prefix    | Advertised | Enabled | Primary
-1  |         | 0.0.0.0/0 | false      | false   | -
-2  |         | ::/0      | false      | false   | -
-3  | phobos  | 0.0.0.0/0 | true       | true    | -
-4  | phobos  | ::/0      | true       | true    | -
+ID | Node   | Prefix    | Advertised | Enabled | Primary
+1  |        | 0.0.0.0/0 | false      | false   | -
+2  |        | ::/0      | false      | false   | -
+3  | phobos | 0.0.0.0/0 | true       | true    | -
+4  | phobos | ::/0      | true       | true    | -
 ```
 
 ## On the client
@@ -46,4 +48,4 @@ The exit node can now be used with:
 $ sudo tailscale set --exit-node phobos
 ```
 
-Check the official [Tailscale documentation](https://tailscale.com/kb/1103/exit-nodes/?q=exit#step-3-use-the-exit-node) for how to do it on your device.
+Check the official [Tailscale documentation](https://tailscale.com/kb/1103/exit-nodes#use-the-exit-node) for how to do it on your device.