build: Updating the sphinx configuration (#9833)

Co-authored-by: John Bodley <john.bodley@airbnb.com>

docs/conf.py

@@ -31,6 +31,9 @@ import shlex
 import sys
 
 import sphinx_rtd_theme
+from pandas._typing import ArrayLike  # Somehow required for type-checking.
+
+from superset import security_manager  # Somehow required for type-checking.
 
 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
@@ -304,3 +307,7 @@ texinfo_documents = [
 
 # If true, do not generate a @detailmenu in the "Top" node's menu.
 # texinfo_no_detailmenu = False
+
+# -- Options for sphinx-autodoc-typehints -------------------------------------
+
+set_type_checking_flag = True