remove display_version from docs config (#1463)

Co-authored-by: Brett Graham <[email protected]>

docs/conf.py

@@ -273,7 +273,7 @@ def check_sphinx_version(expected_version):
 # Theme options are theme-specific and customize the look and feel of a theme
 # further.  For a list of options available for each theme, see the
 # documentation.
-html_theme_options = {"collapse_navigation": True, "display_version": True}
+html_theme_options = {"collapse_navigation": True, "version_selector": True}
 #        "nosidebar": "false",
 #        "sidebarbgcolor": "#4db8ff",
 #        "sidebartextcolor": "black",