Fix setup logging

To avoid:
```
  File "/usr/lib/python3.12/logging/__init__.py", line 1539, in info
    self._log(INFO, msg, args, **kwargs)
  File "/usr/lib/python3.12/logging/__init__.py", line 1684, in _log
    self.handle(record)
  File "/usr/lib/python3.12/logging/__init__.py", line 1700, in handle
    self.callHandlers(record)
  File "/venv/lib/python3.12/site-packages/sentry_sdk/integrations/logging.py", line 98, in sentry_patched_callhandlers
    return old_callhandlers(self, record)
Message: '[%s] %r'
Arguments: ('cached since 570.4s ago', {'status': 'ERROR', 'status_1': 'PENDING', 'created_at_1': datetime.datetime(2024, 12, 8, 16, 4, 28, 898425, tzinfo=datetime.timezone.utc)})
--- Logging error ---
Traceback (most recent call last):
  File "/usr/lib/python3.12/logging/__init__.py", line 1163, in emit
    stream.write(msg + self.terminator)
    ^^^^^^^^^^^^
AttributeError: 'str' object has no attribute 'write'
```

c2cwsgiutils/loader.py

@@ -22,15 +22,16 @@ def __repr__(self) -> str:
 
     def setup_logging(self, defaults: Optional[dict[str, str]] = None) -> None:
         """
-        Set up logging via :func:`logging.config.fileConfig`.
+        Set up logging via :func:`logging.config.dictConfig` with value returned from c2cwsgiutils.get_logconfig_dict.
 
         Defaults are specified for the special ``__file__`` and ``here``
         variables, similar to PasteDeploy config loading. Extra defaults can
         optionally be specified as a dict in ``defaults``.
 
         Arguments:
-            defaults: The defaults that will be used when passed to
-                :func:`logging.config.fileConfig`.
+        ---------
+        defaults: The defaults that will be used when passed to
+            :func:`logging.config.fileConfig`.
 
         """
         if "loggers" in self.get_sections():