Update black setup

Hugo Osvaldo Barrera · Hugo Osvaldo Barrera · commit 5a5f94ccf328 · 2021-08-04T20:21:23.000+02:00
diff --git a/setup.cfg b/setup.cfg
@@ -1,7 +1,9 @@
 [flake8]
 exclude = docs/conf.py
+extend-ignore =
+  E203,  # Black-incompatible colon spacing.
+  W503,  # Line jump before binary operator.
 max-line-length = 88
-extend-ignore = E203, W503
 
 [isort]
 force_single_line=true
