Fix formatting according to black

Author: mhucka

docs/conf.py

@@ -77,4 +77,6 @@
 html_static_path = ['_static']
 html_css_files = ['fixes.css', 'qai-theme.css']
 html_logo = 'https://raw.githubusercontent.com/quantumlib/Qualtran/8fa2e8ae4fa071ece632fb7a7f615918128983e3/docs/_static/qualtran-logo-mode-sensitive.svg'
-html_favicon = 'https://raw.githubusercontent.com/quantumlib/Qualtran/refs/heads/main/docs/_static/favicon.png'
+html_favicon = (
+    'https://raw.githubusercontent.com/quantumlib/Qualtran/refs/heads/main/docs/_static/favicon.png'
+)