Improve doc for access_bank1

src/flash/mod.rs

@@ -130,7 +130,7 @@ pub trait FlashExt {
  &mut self,
  f: impl FnOnce(&mut LockedFlashBank, Option<&mut LockedFlashBank>) -> T,
  ) -> T;
- ///
+ /// Access to memory bank 1.
  fn access_bank1<F, T>(&mut self, f: F) -> T
  where
  F: FnOnce(&mut LockedFlashBank) -> T;