add #[doc(hidden)] to __SalsaQueryDescriptor

src/lib.rs

@@ -523,13 +523,9 @@ macro_rules! database_storage {
             )*
         }
 
-        /// Identifies a query and its key. You are not meant to name
-        /// this type directly or use its fields etc.  It is a
-        /// **private query descriptor type generated by salsa** and
-        /// its exact structure is subject to change. Sadly, I don't
-        /// know any way to hide this with hygiene, so use `__`
-        /// instead.
+        /// Identifies a query and its key.
         #[derive(Clone, Debug, PartialEq, Eq, Hash)]
+        #[doc(hidden)]
         $v struct __SalsaQueryDescriptor {
             kind: __SalsaQueryDescriptorKind
         }