style(CHANGELOG): strip trailing whitespace

Author: ErichDonGubler

CHANGELOG.md

@@ -124,9 +124,9 @@ let (device, queue) = adapter
     .unwrap();
 ```
 
-More examples of this 
+More examples of this
 
-By @Vecvec in [#7829](https://github.com/gfx-rs/wgpu/pull/7829). 
+By @Vecvec in [#7829](https://github.com/gfx-rs/wgpu/pull/7829).
 
 ### Naga