Update utils_pip_compatibility_tags.py.ABOUT

Update notes "Modified copy of pip compatibility_tags.py."

Signed-off-by: Chin Yeung Li <tli@nexb.com>

Author: chinyeungli

src/python_inspector/utils_pip_compatibility_tags.py.ABOUT

@@ -11,4 +11,4 @@ package_url: pkg:github/pypa/pip@20.3.1#src/pip/_internal/utils/compatibility_ta
 download_url: https://github.com/pypa/pip/blob/20.3.1/src/pip/_internal/utils/compatibility_tags.py
 copyright: Copyright (c) 2008-2020 The pip developers (see AUTHORS.txt file)
 license_expression: mit
-notes: subset copied from pip for tag handling
+notes: subset copied from pip for tag handling. Modified copy of pip compatibility_tags.py.