Update Polls event docs

discord/poll.py

@@ -446,7 +446,12 @@ class Poll:
 
     @property
     def created_at(self) -> Optional[datetime.datetime]:
-        """:class:`datetime.datetime`: Returns the poll's creation time, or ``None`` if user-created."""
+        """Optional[:class:`datetime.datetime`]: Returns the poll's creation time.
+
+        .. note::
+
+            This will **always** be ``None`` for stateless polls.
+        """
 
         if not self._message:
             return

docs/api.rst

@@ -1269,8 +1269,8 @@ Polls
 .. function:: on_poll_vote_add(user, answer)
               on_poll_vote_remove(user, answer)
 
-    Called when a :class:`Poll` gains or loses a vote. If the ``user`` or ``message``
-    are not cached then this event will not be called.
+    Called when a :class:`Poll` gains or loses a vote. If the ``user`` or ``answer``'s poll
+    parent message are not cached then this event will not be called.
 
     .. note::
 
@@ -1290,6 +1290,11 @@ Polls
     Called when a :class:`Poll` gains or loses a vote. Unlike :func:`on_poll_vote_add` and :func:`on_poll_vote_remove`
     this is called regardless of the state of the internal user and message cache.
 
+    .. note::
+
+        If the poll allows multiple answers and the user removes or adds multiple votes, this
+        event will be called as many times as votes that are added or removed.
+
     .. versionadded:: 2.1
 
     :param payload: The raw event payload data.