fix #109: Rename models/config_model to models/config

[sushant-suse]

Linked Issue #109

[tomschr]

This looks good. There is only two lines you forgot in src/docbuild/cli/cmd_cli.py:

diff --git i/src/docbuild/cli/cmd_cli.py w/src/docbuild/cli/cmd_cli.py
index ad98051..6299c5c 100644
--- i/src/docbuild/cli/cmd_cli.py
+++ w/src/docbuild/cli/cmd_cli.py
@@ -14,8 +14,8 @@ from typing import Any, cast
 from ..__about__ import __version__
 from ..config.app import replace_placeholders
 from ..config.load import handle_config
-from ..models.config_model.app import AppConfig
-from ..models.config_model.env import EnvConfig 
+from ..models.config.app import AppConfig
+from ..models.config.env import EnvConfig

If you apply these, then my tests succeeds. 😸