docs(CHANGES) Type improvements

Author: tony

CHANGES

@@ -22,7 +22,7 @@ _Notes on the upcoming release will go here._
 
 ### What's new
 
-#### pytest plugin: Extract public TypeAliases; rename `CreateRepoPytestFixtureFn` (#???)
+#### pytest plugin: Improve typings (#521)
 
 The pytest plugin now exports concise public TypeAliases in place of
 the private `_ENV` type that was leaking into public signatures:
@@ -39,7 +39,7 @@ the private `_ENV` type that was leaking into public signatures:
 ### Documentation
 
 - pytest plugin: `CreateRepoFn` and `CreateRepoPostInitFn` now render
-  as hyperlinks in the fixture summary table (#???)
+  as hyperlinks in the fixture summary table (#521)
 
 ## libvcs 0.39.0 (2026-02-07)