Update net.serve docs for address change (#149)

types/net.luau

@@ -113,12 +113,28 @@ type ServeWebSocketHandler = (socket: WebSocket) -> ()
 
 	Configuration for `net.serve`.
 
-	This may contain one of, or both of the following callbacks:
+	This may contain one of or more of the following values:
 
+	* `address` for setting the IP address to serve from. Defaults to the loopback interface (`http://localhost`).
 	* `handleRequest` for handling normal http requests, equivalent to just passing a function to `net.serve`
 	* `handleWebSocket` for handling web socket requests, which will receive a `WebSocket` object as its first and only parameter
+
+	When setting `address`, the `handleRequest` callback must also be defined.
+
+	```lua
+		net.serve(8080, {
+			address = "http://0.0.0.0",
+			handleRequest = function(request)
+				return {
+					status = 200,
+					body = "Echo:\n" .. request.body,
+				}
+			end
+		})
+	```
 ]=]
 export type ServeConfig = {
+	address: string?,
 	handleRequest: ServeHttpHandler?,
 	handleWebSocket: ServeWebSocketHandler?,
 }