docs: use nipype's sphinx extension to document interfaces

Author: oesteban

docs/conf.py

@@ -42,9 +42,9 @@
     "sphinx.ext.linkcode",
     "sphinx.ext.githubpages",
     "sphinxarg.ext",  # argparse extension
-    "nipype.sphinxext.plot_workflow",
     "sphinxcontrib.apidoc",
-    "sphinxcontrib.napoleon",
+    "nipype.sphinxext.plot_workflow",
+    "nipype.sphinxext.apidoc",
 ]
 
 autodoc_mock_imports = [
@@ -69,6 +69,9 @@
 napoleon_custom_sections = [
     ("Inputs", "Parameters"),
     ("Outputs", "Parameters"),
+    ("Attributes", "Parameters"),
+    ("Mandatory Inputs", "Parameters"),
+    ("Optional Inputs", "Parameters"),
 ]
 
 # Add any paths that contain templates here, relative to this directory.