setup.cfg: Added urls to config docs

Author: blazewicz

setup.cfg

@@ -1,4 +1,5 @@
 [flake8]
+# https://flake8.pycqa.org/en/latest/user/configuration.html
 max-line-length = 120
 
 [isort]
@@ -8,6 +9,7 @@ multi_line_output = 3
 include_trailing_comma = True
 
 [mypy]
+# https://mypy.readthedocs.io/en/stable/config_file.html
 disallow_untyped_defs = True
 warn_unused_ignores = True
 warn_return_any = True