fixup! docs(CHANGES) note distro relative-PYTHONPATH test fix

Author: tony

CHANGES

@@ -37,7 +37,7 @@ $ uvx --from 'vcspull' --prerelease allow vcspull
 _Notes on upcoming releases will be added here_
 <!-- END PLACEHOLDER - ADD NEW CHANGELOG ENTRIES BELOW THIS LINE -->
 
-### Fixes
+### Development
 
 #### Test suite works under distro relative-`PYTHONPATH` builds (#549)