InliningAtomic mention in StaticPairAtomic

src/rstd/inlining/static_pair.rs

@@ -208,6 +208,8 @@ where
 }
 
 /// Atomic equivalent of [`StaticPair`].
+///
+/// Note: [`StaticPairAtomic::A`] requires [`InliningAtomic`] be implemented.
 pub trait StaticPairAtomic:
     'static + Send + Sync + Clone + Sized + StaticPairSerializable<SA = Self::A, SB = Self::B>
 {