fix to make comment true

doc/example-plugins/todo.py

@@ -8,7 +8,7 @@ def process_message(data):
     channel = data["channel"]
     text = data["text"]
     #only accept tasks on DM channels
-    if channel.startswith("D") or channel.startswith("C"):
+    if channel.startswith("D"):
         if channel not in tasks.keys():
             tasks[channel] = []
         #do command stuff