Update app.py

app.py

@@ -38,8 +38,8 @@ def get_current_time_in_timezone(timezone: str) -> str:
 def normal_distribution_array(mu:float, sigma:float):
     """A tool calculate a numpy array of a normal distribution using the mu and sigma.
     Args:
-        mu (float): median of the normal distriburion.
-        sigma (float): standard deviation of the normal distribution.
+        mu: median of the normal distriburion.
+        sigma: standard deviation of the normal distribution.
     """
     try:
         from numpy.random import normal