Adjust scipy intersphinx mapping

Due to scipy/scipy#15545. This should fix the failing doc build - hopefully.

docs/conf.py

@@ -109,7 +109,7 @@
 intersphinx_mapping = {
     "python": ("https://docs.python.org/3", None),
     "numpy": ("https://numpy.org/doc/stable/", None),
-    "scipy": ("https://docs.scipy.org/doc/scipy/reference/", None),
+    "scipy": ("https://docs.scipy.org/doc/scipy/html-scipyorg/", None),
     "pandas": ("https://pandas.pydata.org/pandas-docs/stable/", None),
     "astropy": ("https://docs.astropy.org/en/stable/", None),
     "pytest": ("https://docs.pytest.org/en/stable", None),