Describe where the behavior change is made

Co-Authored-By: uranusjr <uranusjr@gmail.com>

changelog.d/1519.change.rst

-Perform additional path normalization to ensure path values to a directory is always the same, preventing false positives when checking scripts have a consistent prefix to set up on Windows.
+In ``pkg_resources.normalize_path``, additional path normalization is now performed to ensure path values to a directory is always the same, preventing false positives when checking scripts have a consistent prefix to set up on Windows.