Update tool.py

haystack/dataclasses/tool.py

@@ -112,7 +112,7 @@ def from_function(cls, function: Callable, name: Optional[str] = None, descripti
         Create a Tool instance from a function.
 
         ### Usage example
-        
+
         ```python
         from typing import Annotated, Literal
         from haystack.dataclasses import Tool