Update tutorials/1-installable-code.md

Co-authored-by: Carol Willing <[email protected]>

Author: lwasser

tutorials/1-installable-code.md

@@ -522,5 +522,5 @@ In the upcoming lessons you will:
 * [Learn how to build your your package distribution](6-publish-pypi.md) files (**sdist** and **wheel**) and publish to **test PyPI**.
 * Finally you will learn how to publish to **conda-forge** from **PyPI**.
 
-If you have a package that is ready for the mainstream user then
+If you have a package that is "install-ready" for another user, then
 you can also publish your package on PyPI.