Update app.py

ajout de lower() pour compter les lettre indépendamment de la casse.

app.py

@@ -30,7 +30,7 @@ def count_letter_in_word(word:str, letter:str)-> str: # Strawberry special
         letter: A string representing the letter to search.
     """
     count = 0
-    for character in word:
+    for character in word.lower():
         if character == letter:
             count += 1
     return str(count)