Update DSPythonNet3/THIRD_PARTY_NOTICES.txt

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: ivaylo-matov

DSPythonNet3/THIRD_PARTY_NOTICES.txt

@@ -878,7 +878,7 @@ Agreement.
 Package: networkx
 Version: 3.5
 License: BSD License
-https://pypi.org/project/networkx/
+Source: https://pypi.org/project/networkx/
 Copyright: Copyright (c) 2004-2025, NetworkX Developers
    Aric Hagberg <hagberg@lanl.gov>
    Dan Schult <dschult@colgate.edu>