add tracking issue

Author: oscartbeaumont

content/docs/specta/rfc/flightscience.mdx

@@ -1950,6 +1950,8 @@ Changes:
     - Allow getting the `NamedDataType` an error occurred in back out.
     - Restructure error enum to include some errors we didn't handle well before.
 
+Tracked by issues [#475](https://github.com/specta-rs/specta/issues/475).
+
 ### TODOs
 
 I have resolved all remaining TODO's in `specta`, `specta-macros`, `specta-typescript` and `specta-serde`.