Resolves #2781 - Typo in javadoc

jetty-websocket/websocket-api/src/main/java/org/eclipse/jetty/websocket/api/WebSocketPolicy.java

@@ -178,7 +178,7 @@ public class WebSocketPolicy
     }
 
     /**
-     * The time in ms (milliseconds) that a websocket connection mad by idle before being closed automatically.
+     * The time in ms (milliseconds) that a websocket connection may by idle before being closed automatically.
      * 
      * @return the timeout in milliseconds for idle timeout.
      */