Convert the imports in the commit in io to use "kernel vertical" style.

Signed-off-by: Zhi Wang <zhiw@nvidia.com>
---
 rust/kernel/io.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/rust/kernel/io.rs b/rust/kernel/io.rs
index 1aa9495f7774..6f1e22613f8b 100644
--- a/rust/kernel/io.rs
+++ b/rust/kernel/io.rs
@@ -64,7 +64,14 @@ pub fn maxsize(&self) -> usize {
 /// # Examples
 ///
 /// ```no_run
-/// # use kernel::{bindings, ffi::c_void, io::{Io, IoRaw}};
+/// # use kernel::{
+///     bindings,
+///     ffi::c_void,
+///     io::{
+///         Io,
+///         IoRaw, //
+///     }, //
+/// };
 /// # use core::ops::Deref;
 ///
 /// // See also [`pci::Bar`] for a real example.
-- 
2.51.0