Documentation enhancements

This is related to #784
The trailing wildcard is automatically removed (see https://github.com/dropwizard/dropwizard/blob/v0.8.0-rc1/dropwizard-jersey/src/main/java/io/dropwizard/jersey/DropwizardResourceConfig.java#L149-151), so this is only a visual "helper" so that it looks more like an URL pattern people know from the Java Servlet API.