Fixing the tool

tools/final_answer.py

@@ -13,8 +13,8 @@ class FinalAnswerTool(Tool):
     }
     output_type = "any"
 
-    def forward(self, answer: Any) -> Any:
-        return answer
+    def forward(self, final_answer: Any) -> Any:
+        return final_answer
 
     def __init__(self, *args, **kwargs):
         self.is_initialized = False