message: [pdsl_core] Update docs of storage::Stash
diff: @@ -201,15 +201,15 @@ impl<T> parity_codec::Decode for Stash<T> {
  }
  impl<T> Stash<T> {
  - /// Creates a new storage vector for the given key.
  + /// Creates a new storage stash for the given key.
  ///
  /// # Safety
  ///
  /// This is an inherently unsafe operation since it does not check
  - /// for the storage vector's invariances, such as
  + /// for the storage stash's invariances, such as
  ///
  /// - Is the storage region determined by the given key aliasing?
  - /// - Is the storage region correctly formatted to be used as storage vec?
  + /// - Is the storage region correctly formatted to be used as storage stash?
  ///
  /// Users should not use this routine directly if possible.
  pub unsafe fn new_unchecked(
  @@ -226,7 +226,7 @@ impl<T> Stash<T> {
  }
  }
  - /// Allocates a new storage hash map using the given storage allocator.
  + /// Allocates a new storage stash using the given storage allocator.
  ///
  /// # Safety
  ///
  