add comment

masonry/README.md

@@ -14,13 +14,15 @@
 
 </div>
 
-[tracing_tracy]: https://crates.io/crates/tracing-tracy
-
 <!-- We use cargo-rdme to update the README with the contents of lib.rs.
 To edit the following section, update it in lib.rs, then run:
 cargo rdme --workspace-project=color --heading-base-level=0
 Full documentation at https://github.com/orium/cargo-rdme -->
 
+<!-- Intra-doc links used in lib.rs should be evaluated here.
+See https://linebender.org/blog/doc-include/ for related discussion. -->
+[tracing_tracy]: https://crates.io/crates/tracing-tracy
+
 <!-- cargo-rdme start -->
 
 Masonry gives you a platform to create windows (using [winit] as a backend) each with a tree of widgets. It also gives you tools to inspect that widget tree at runtime, write unit tests on it, and generally have an easier time debugging and maintaining your app.