Improve docstring formatting for progress bar function

Author: Pierre-Louis Barbarant

src/fugw/utils.py

@@ -22,7 +22,8 @@
 
 # `rich` progress bar used throughout the codebase
 def _get_progress(verbose=True, **kwargs):
-    """Return a custom `rich` progress bar if verbose is True, else a nullcontext."""
+    """Return a custom `rich` progress bar if verbose is True,
+    else a nullcontext."""
     if not verbose:
         return nullcontext()  # Do nothing when verbose is False