s/egg/package

Co-authored-by: Maurits van Rees <[email protected]>

Author: stevepiercy

docs/contributing/core/release.md

@@ -33,7 +33,7 @@ All files mentioned in this list may be written in Markdown or reStructuredText
 -   {file}`README` and {file}`CHANGES` must be visible on PyPI.
 -   Released eggs must contain generated gettext `.mo` files, but these files must not be committed to the repository.
     The `.mo` files can be created with the `zest.pocompile` add-on, which should be installed together with `zest.releaser`.
--   `.gitignore` and `MANIFEST.in` must reflect the files going in to the egg (must include page template and `.po` files).
+-   `.gitignore` and `MANIFEST.in` must reflect the files going in to the package (must include page template and `.po` files).
 
 ```{seealso}
 [High quality automated package releases for Python with `zest.releaser`](https://opensourcehacker.com/2012/08/14/high-quality-automated-package-releases-for-python-with-zest-releaser/).