Update app.py

app.py

@@ -91,11 +91,11 @@ def clear_callback():
 
 col1, col2, col3, col4 = st.columns([1, 1, 1, 1])
 with col1:
-    st.button("Demo immunology", on_click=demo_immunology_callback)
+    st.button("Demo: immunology", on_click=demo_immunology_callback)
 with col2:
-    st.button("Demo virology", on_click=demo_virology_callback)
+    st.button("Demo: virology", on_click=demo_virology_callback)
 with col2:
-    st.button("Demo microbiology", on_click=demo_microbiology_callback)
+    st.button("Demo: µbiology", on_click=demo_microbiology_callback)
 with col4:
     st.button("Clear fields", on_click=clear_callback)