[hal] fix typos of Surface.
@@ -190,7 +190,7 @@ pub trait Surface<B: Backend>: fmt::Debug + Any + Send + Sync {
/// Use this function for configuring swapchain creation.
///
/// Returns a tuple of surface capabilities and formats.
- /// If formats is `None` than the surface has no preferred format and the
+ /// If formats are `None` then the surface has no preferred format and the
/// application may use any desired format.
fn compatibility(
&self,
