Fix typos in chat example

Author: samb1729

examples/chat/README.md

@@ -22,7 +22,7 @@ To use the chat example, open http://localhost:8080/ in your browser.
 ## Server
 
 The server application defines two types, `Client` and `Hub`. The server
-creates an instance of the `Client` type for each webscocket connection. A
+creates an instance of the `Client` type for each websocket connection. A
 `Client` acts as an intermediary between the websocket connection and a single
 instance of the `Hub` type. The `Hub` maintains a set of registered clients and
 broadcasts messages to the clients.
@@ -32,7 +32,7 @@ The application runs one goroutine for the `Hub` and two goroutines for each
 has channels for registering clients, unregistering clients and broadcasting
 messages. A `Client` has a buffered channel of outbound messages. One of the
 client's goroutines reads messages from this channel and writes the messages to
-the webscoket. The other client goroutine reads messages from the websocket and
+the websocket. The other client goroutine reads messages from the websocket and
 sends them to the hub.
 
 ### Hub