[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

source/guides/packaging-namespace-packages.rst

@@ -96,7 +96,7 @@ logic to fail and the other sub-packages will not be importable.
 
 The ``src-layout`` directory structure allows automatic discovery of packages
 by most :term:`build backends <Build Backend>`. See :ref:`src-layout-vs-flat-layout`
-for more information. If however you want to manage exclusions or inclusions of packages 
+for more information. If however you want to manage exclusions or inclusions of packages
 yourself, this is possible to be configured in the top-level :file:`pyproject.toml`:
 
 .. code-block:: toml