fixup! core/ndstrides: implement np_array()

fix ListObject::get_opaque_list_ptr comment

nac3core/src/codegen/object/list.rs

@@ -91,7 +91,7 @@ impl<'ctx> ListObject<'ctx> {
     /// Get the value of this [`ListObject`] as a list with opaque items.
     ///
     /// This function allocates on the stack to create the list, but the
-    /// reference to the `items` are preserved.
+    /// reference to the `items` is preserved.
     pub fn get_opaque_list_ptr<G: CodeGenerator + ?Sized>(
         &self,
         generator: &mut G,