Fix incompatibility issue with setuptools >= 78

Setuptools deprecated dash-separated settings

From NEWS.rst: 

> Setuptools no longer accepts options containing uppercase or dash characters in setup.cfg. Please ensure to write the options in setup.cfg using the :wiki:`lower_snake_case <Snake_case>` convention (e.g. Name => name, install-requires => install_requires). This is a follow-up on deprecations introduced in v54.1.0 (see #1608) and v54.1.1 (see #2592).

Author: romeroyonatan

setup.cfg

@@ -1,5 +1,5 @@
 [metadata]
-description-file = README.md
+description_file = README.md
 
 [flake8]
 max-line-length = 100