Update ctru-rs/examples/gfx-3d-mode.rs

Co-authored-by: Ian Chamberlain <ian-h-chamberlain@users.noreply.github.com>

ctru-rs/examples/gfx-3d-mode.rs

@@ -1,7 +1,7 @@
 //! 3D Graphics example.
 //!
 //! This example showcases 3D mode rendering (using the CPU).
-//! In a normal application, all rendering should be hanlded via the GPU.
+//! In a normal application, all rendering should be handled via the GPU.
 
 use ctru::prelude::*;
 use ctru::services::gfx::{Flush, Screen, Side, Swap, TopScreen3D};