fix: Fix issue causing attribute error in python 3.9

Author: anubhav756

packages/toolbox-core/src/toolbox_core/utils.py

@@ -38,9 +38,7 @@ def create_func_docstring(description: str, params: Sequence[ParameterSchema]) -
         return docstring
     docstring += "\n\nArgs:"
     for p in params:
-        docstring += (
-            f"\n    {p.name} ({p.to_param().annotation.__name__}): {p.description}"
-        )
+        docstring += f"\n    {p.name} ({str(p.to_param().annotation)}): {p.description}"
     return docstring