Ignore Sphinx warning

Author: Viicos

docs/source/conf.py

@@ -93,3 +93,6 @@ def find_version(*file_paths):
 # relative to this directory. They are copied after the builtin static files,
 # so a file named "default.css" will overwrite the builtin "default.css".
 html_static_path = []
+
+# Sphinx somehow can't find this one
+nitpick_ignore = [("py:class", "RSAPublicKey")]