removed reference to NonZeroU32 from tutorial5

docs/beginner/tutorial5-textures/README.md

@@ -95,8 +95,8 @@ queue.write_texture(
     // The layout of the texture
     wgpu::ImageDataLayout {
         offset: 0,
-        bytes_per_row: std::num::NonZeroU32::new(4 * dimensions.0),
-        rows_per_image: std::num::NonZeroU32::new(dimensions.1),
+        bytes_per_row: Some(4 * dimensions.0),
+        rows_per_image: Some(dimensions.1),
     },
     texture_size,
 );
@@ -515,8 +515,8 @@ impl Texture {
             &rgba,
             wgpu::ImageDataLayout {
                 offset: 0,
-                bytes_per_row: std::num::NonZeroU32::new(4 * dimensions.0),
-                rows_per_image: std::num::NonZeroU32::new(dimensions.1),
+                bytes_per_row: Some(4 * dimensions.0),
+                rows_per_image: Some(dimensions.1),
             },
             size,
         );