simplify overrides

Author: zingale

docs/source/conf.py

@@ -122,11 +122,7 @@
 # so a file named "default.css" will overwrite the builtin "default.css".
 html_static_path = ['_static']
 
-html_context = {
-    'css_files': [
-        '_static/theme_overrides.css',  # override wide tables in RTD theme
-        ],
-    }
+html_css_files = ["theme_overrides.css"]
 
 # Custom sidebar templates, must be a dictionary that maps document names
 # to template names.