Cut an internals release

serde_derive_internals/src/lib.rs

@@ -6,6 +6,8 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
+#![doc(html_root_url = "https://docs.rs/serde_derive_internals/0.15.0")]
+
 extern crate syn;
 #[macro_use]
 extern crate synom;