🩹📝 fix docs build

Signed-off-by: burgholzer <[email protected]>

docs/conf.py

@@ -185,6 +185,7 @@ def format_url(self, _e: Entry) -> HRef:  # noqa: PLR6301
     "releasename": "Version",
     "printindex": r"\footnotesize\raggedright\printindex",
     "tableofcontents": "",
+    "sphinxsetup": "iconpackage=fontawesome",
     "extrapackages": r"\usepackage{qrcode,graphicx,calc,amsthm}",
     "preamble": r"""
 \newtheorem{example}{Example}