Added numpydoc as a dependency.

doc/source/conf.py

@@ -37,6 +37,7 @@
     "sphinx.ext.intersphinx",
     "sphinx.ext.extlinks",
     "sphinx.ext.doctest",
+    "numpydoc",
     "sphinx_autodoc_typehints",
     "sphinx_favicon",
     "sphinx_copybutton",

pyproject.toml

@@ -49,12 +49,13 @@ test = [
 ]
 # This is needed for a sphinx bug. See #414.
 doc = [
+    "numpydoc",
 	"sphinx>=7.4.0", 
 	"sphinxcontrib-apidoc", 
 	"pydata_sphinx_theme",
 	"sphinx-favicon",
 	"sphinx-copybutton",
-    	"sphinx_autodoc_typehints",
+    "sphinx_autodoc_typehints",
 	"autodocsumm",
 ]
 format = ["black~=25.1"]