FIX: Correct docstring

unittests/test_tool.py

@@ -970,7 +970,7 @@ def test_split_restricted_path():
 
 def test_deprecated_prefix_option():
     """Test that calling the crawler's main function with the deprecated
-    `prefix` option correctly raises a Deprecation warning.
+    `prefix` option raises the correct errors and warnings.
 
     """