Update app.py

Cleanup Python typo

app.py

@@ -18,7 +18,7 @@ def celcius_tool(convertTo:str, temperature:int)-> str: #it's important to speci
     """
     if convertTo == "F":
         result = int((temperature * 1.8) + 32)
-        return f"temperature} degrees in Fahrenheit is {result}"
+        return f"Temperature {temperature} degrees in Fahrenheit is {result}"
     elif convertTo == "C":
         result = int((temperature - 32) * 5/9)
         return f"Temperature {temperature} degrees in Celsius is {result}"