Fixed spelling error

app.py

@@ -14,7 +14,7 @@ def predict(input, history=None):
 
 with gr.Blocks() as demo:
     gr.Markdown('''## ChatGLM-6B - unofficial demo
-    Unnoficial demo of the [ChatGLM-6B](https://github.com/THUDM/ChatGLM-6B/blob/main/README_en.md) model, trained on 1T tokens of English and Chinese
+    Unofficial demo of the [ChatGLM-6B](https://github.com/THUDM/ChatGLM-6B/blob/main/README_en.md) model, trained on 1T tokens of English and Chinese.
     ''')
     state = gr.State([])
     chatbot = gr.Chatbot([], elem_id="chatbot").style(height=400)