flake8 error fixed

Author: codeperfectplus

docs/conf.py

@@ -25,4 +25,4 @@
 
 html_static_path = ['_static']
 exclude_patterns = ['_build', 'Thumbs.db', '.DS_Store', '.venv']
-html_sidebars = { '**': ['globaltoc.html', 'relations.html', 'sourcelink.html', 'searchbox.html'] }
+html_sidebars = {'**': ['globaltoc.html', 'relations.html', 'sourcelink.html', 'searchbox.html']}