Replace SciPy with mplsignal

docs_sphinx/conf.py

@@ -40,6 +40,7 @@ intersphinx_mapping = {
     'numpy': ('https://numpy.org/doc/stable/', None),
     'PyQt5': ("https://www.riverbankcomputing.com/static/Docs/PyQt5", None),
     'networkx': ('https://networkx.org/documentation/stable', None),
+    'mplsignal': ('https://mplsignal.readthedocs.io/en/stable/', None),
 }
 
 numpydoc_show_class_members = False