Remove trailing space

Author: GrantM11235

embedded-hal-async/src/spi.rs

@@ -163,7 +163,7 @@ pub unsafe trait SpiDevice: ErrorType {
     /// **NOTE:**
     /// It is not recommended to use this method directly, because it requires `unsafe` code to dereference the raw pointer.
     /// Instead, the [`transaction!`] macro should be used, which handles this safely inside the macro.
-    /// 
+    ///
     /// - Locks the bus
     /// - Asserts the CS (Chip Select) pin.
     /// - Calls `f` with an exclusive reference to the bus, which can then be used to do transfers against the device.