Rename followup() to send_followup()

Co-authored-by: BobDotCom <[email protected]>

Author: hypergonial

discord/commands/context.py

@@ -140,7 +140,7 @@ def respond(self):
             raise RuntimeError(f"Interaction was already issued a response. Try using {type(self).__name__}.followup() instead.")
 
     @property
-    def followup(self):
+    def send_followup(self):
         if self.response.is_done():
             return self.followup.send
         else: