[Utils/Trivia] Handle smart quotes (#2162)

Adds a new filter function for substituting out smart-quotes.

Makes trivia use it.

redbot/cogs/trivia/session.py

@@ -6,6 +6,7 @@ from collections import Counter
 import discord
 from redbot.core.bank import deposit_credits
 from redbot.core.utils.chat_formatting import box
+from redbot.core.utils.common_filters import normalize_smartquotes
 from .log import LOG
 
 __all__ = ["TriviaSession"]
@@ -222,6 +223,7 @@ class TriviaSession:
 
             self._last_response = time.time()
             guess = message.content.lower()
+            guess = normalize_smartquotes(guess)
             for answer in answers:
                 if " " in answer and answer in guess:
                     # Exact matching, issue #331