update module docstring

src/pygenesis/config.py

@@ -1,4 +1,12 @@
-"""Module loads the config (.env) file. (Placeholder for additional logic related to the config.)"""
+"""Module for handling settings.ini and config.ini files.
+
+This package stores core information in the settings.ini, which is stored under the user home directory.
+The parent directory for the settings.ini is called after the package name.
+The settings.ini gets automatically created by importing this package, if it does not exist already.
+The config.ini is stored in a directory that is configured in the settings.ini via `config_dir`.
+The config.ini holds all revelant information about the usage of GENESIS API like credentials.
+If there is no config.ini in the given config_dir, a default config will be created with empty credentials.
+"""
 import logging
 from configparser import ConfigParser
 from pathlib import Path