examples/fruit: Make draw logic act on RedrawRequested instead of Close again

It seems rust-windowing#132 contains a copy-paste typo to trigger draw logic on
`CloseRequested` instead of on `RedrawRequested`.

Signed-off-by: Marijn Suijten <marijns95@gmail.com>

Author: MarijnS95

examples/fruit.rs

@@ -41,7 +41,7 @@ fn main() {
             match event {
                 Event::WindowEvent {
                     window_id,
-                    event: WindowEvent::CloseRequested,
+                    event: WindowEvent::RedrawRequested,
                 } if window_id == window.id() => {
                     surface
                         .resize(