Update number guessing.py

Fixed comment to valid pythonic syntax

Author: Piombacciaio

number guessing.py

@@ -10,7 +10,7 @@ def start_game():
     print("Hello traveler! Welcome to the game of guesses!")
     player_name = input("What is your name? ")
     wanna_play = input("Hi, {}, would you like to play the guessing game? (Enter Yes/No) ".format(player_name))
-    // Where the show_score function USED to be
+    # Where the show_score function USED to be
     attempts = 0
     show_score()
     while wanna_play.lower() == "yes":