book: clean up formatting

Author: djc

docs/book/src/quinn/set-up-connection.md

@@ -1,23 +1,23 @@
 # Connection Setup
 
 In the [previous chapter](certificate.md) we looked at how to configure a certificate.
-This aspect is omitted in this chapter to prevent duplication. 
-But **remember** that this is required to get your [Endpoint][Endpoint] up and running. 
-This chapter explains how to set up a connection and prepare it for data transfer. 
+This aspect is omitted in this chapter to prevent duplication.
+But **remember** that this is required to get your [Endpoint][Endpoint] up and running.
+This chapter explains how to set up a connection and prepare it for data transfer.
 
-It all starts with the [Endpoint][Endpoint] struct, this is the entry point of the library. 
+It all starts with the [Endpoint][Endpoint] struct, this is the entry point of the library.
 
 ## Example
 
-Let's start by defining some constants. 
+Let's start by defining some constants.
 
 ```rust
 {{#include set-up-connection.rs:5:13}}
 ```
 
 **Server**
 
-First, the server endpoint should be bound to a socket. 
+First, the server endpoint should be bound to a socket.
 The [server()][server] method, which can be used for this, returns the `Endpoint` type.
 `Endpoint` is used to start outgoing connections and accept incoming connections.
 
@@ -28,15 +28,15 @@ The [server()][server] method, which can be used for this, returns the `Endpoint
 **Client**
 
 The [client()][client] returns only a `Endpoint` type.
-The client needs to connect to the server using the [connect(server_name)][connect] method.  
+The client needs to connect to the server using the [connect(server_name)][connect] method.
 The `SERVER_NAME` argument is the DNS name, matching the certificate configured in the server.
 
 ```rust
 {{#include set-up-connection.rs:29:39}}
 ```
 <br><hr>
 
-[Next up](data-transfer.md), let's have a look at sending data over this connection.  
+[Next up](data-transfer.md), let's have a look at sending data over this connection.
 
 
 [Endpoint]: https://docs.rs/quinn/latest/quinn/struct.Endpoint.html