update app.py

app.py

@@ -14,7 +14,8 @@ st.markdown("Differential diagnosis of dementia remains a challenge in neurology
 
 # section 2
 st.markdown("#### Demo")
-st.markdown("Please enter the input features in the textbox below, formatted as a JSON dictionary. Click the \"**RANDOM EXAMPLE**\" button to populate the textbox with a randomly selected case from the NACC testing dataset. Use the \"**PREDICT**\" button to submit your input to the model, which will then provide probability predictions for mental status and all 10 etiologies.")
+st.markdown("This Hugging Face Space is published for demonstration purposes. Users can input over 300 clinical entries to assess mental status and the etiologies contributing to dementia. However, due to the computational power limitations of the Hugging Face free tier, imaging features and Shapley values analysis are not supported. For the full implementation, please refer to our GitHub repository.")
+st.markdown("To use the demo:\n* Provide input features in the form below. Feature missing is allowed.\n* Click the \"**RANDOM EXAMPLE**\" button to populate the form with a randomly selected datapoint.\n* Use the \"**PREDICT**\" button to submit all input features for assessment, then the predictions will be posted in a table.")
 
 # load model
 @st.cache_resource