docs: Update docstring for ConfigurationManager __init__ method

- Updated the docstring for the ConfigurationManager class's __init__ method to include details about the 'indent' parameter for controlling JSON indentation level during formatting.

This update provides improved documentation clarity by specifying the purpose of the 'indent' parameter in the method's signature.

Author: teleprint-me

jsonpycraft/manager/configuration.py

@@ -30,7 +30,7 @@ def __init__(
         Args:
             file_path (str): The path to the configuration file.
             initial_data (Optional[JSONMap], optional): Initial configuration data. Defaults to None.
-            logger (Optional[Logger]): Optional logger for error-handling.
+            indent (int, optional): The JSON indentation level for formatting. Defaults to 2.
         """
         super(ConfigurationManager, self).__init__()