add remaining warnings to nitpick_ignore

docs/source/conf.py

@@ -86,6 +86,12 @@
 ]
 
 nitpicky = True
+nitpick_ignore = [('py:class', 'Intracomm'),
+                  ('py:class', 'h5py.RegionReference'),
+                  ('py:class', 'h5py._hl.dataset.Dataset'),
+                  ('py:class', 'function'),
+                  ('py:class', 'unittest.case.TestCase'),
+                  ]
 
 # Add any paths that contain templates here, relative to this directory.
 templates_path = ["_templates"]