Update doc/source/library_description/packaging.rst

Co-authored-by: Kathy Pippert <84872299+PipKat@users.noreply.github.com>

Author: jorgepiloto

doc/source/library_description/packaging.rst

@@ -151,8 +151,9 @@ Setuptools
 ^^^^^^^^^^
 
 Setuptools is a very well known build system in the Python ecosystem. It is used
-in projects requiring a ``setup.py``. Setuptools can be used with projects using
-the ``pyproject.toml`` too, although not all metadata is fully supported yet.
+in projects requiring a ``setup.py`` file and can be used in projects with a
+``pyproject.toml`` file, although not all metadata in this second file
+is fully supported yet.
 
 The main advantage of this build system is the ability to create custom build
 steps in the form of Python code.