Update app.py

input constraint added

app.py

@@ -76,7 +76,8 @@ if __name__ == "__main__":
     with st.form("my_form"):
         # here we have input space
         query = st.text_input("Enter query about our Medical Data",
-                              placeholder="Type query here...")
+                              placeholder="Type query here...",
+                              max_chars=200)
         # Every form must have a submit button.
         submitted = st.form_submit_button("Search")