Merge pull request 'add back doc attribute' (#37) from prep-pac-release into main

Reviewed-on: #37

va108xx/src/lib.rs

@@ -3,6 +3,8 @@ svd2rust release can be generated by cloning the svd2rust [repository], checking
 #![allow(non_camel_case_types)]
 #![allow(non_snake_case)]
 #![no_std]
+// Manually inserted.
+#![cfg_attr(docsrs, feature(doc_auto_cfg))]
 use core::marker::PhantomData;
 use core::ops::Deref;
 #[doc = r"Number available in the NVIC for configuring priority"]