Update chain_app.py

chain_app.py

@@ -823,7 +823,7 @@ async def on_chat_start():
             content='Im one of the best open source models that cohere released. i am configured by 2 iranian boys named Artin Daneshvar and Sadra Noadosut to help you out!'
         ).send()
         
-    if chat_profile == 'Command-R-Plus:
+    if chat_profile == 'Command-R-Plus':
         await cl.ChatSettings(
             [
                 Select(