Fix typo

Author: madsmtm

README.md

@@ -55,7 +55,7 @@ For now, the priority for new platforms is:
 Example
 ==
 ```rust,no_run
-use Softbuffer::GraphicsContext;
+use softbuffer::GraphicsContext;
 use winit::event::{Event, WindowEvent};
 use winit::event_loop::{ControlFlow, EventLoop};
 use winit::window::WindowBuilder;