corrected indent error

agent.py

@@ -8,7 +8,7 @@ from smolagents import tool
 def real_number_calculator(
     a: float, b: float, operation: Literal["add", "subtract", "multiply", "divide"]
 ) -> float:
-        """
+    """
     Perform basic arithmetic operations on two real numbers.
 
     This function acts as a simple calculator that can add, subtract,