commit e3673fd8696228237d23765c8256058b3b046be3
Author: Campbell Barton <ideasman42@gmail.com>
Date:   Mon May 11 16:09:56 2020 +1000

    Fix building docs with sphinx 3.x

diff --git a/doc/python_api/sphinx_doc_gen.py b/doc/python_api/sphinx_doc_gen.py
index ee91bbc64b1..36ec0174d80 100644
--- a/doc/python_api/sphinx_doc_gen.py
+++ b/doc/python_api/sphinx_doc_gen.py
@@ -1712,7 +1712,7 @@ class PatchedPythonDomain(PythonDomain):
 
     fw("def setup(app):\n")
     fw("    app.add_stylesheet('css/theme_overrides.css')\n")
-    fw("    app.override_domain(PatchedPythonDomain)\n\n")
+    fw("    app.add_domain(PatchedPythonDomain, override=True)\n\n")
 
     file.close()