Update app file

app.py

@@ -14,13 +14,13 @@ st.write('##')
 
 col1, col2, col3 = st.columns([10, 10, 10])
 with col2:
-    with st.expander("Usage"):
+    with st.expander('**Usage**'):
         st.markdown(
         '''
-        1. Upload your P&ID or Select Test Diagrams
-        2. Set Confidence Threshold
-        3. Press to Perform Inference 🚀
-        4. Visualize Model Predictions
+        1) Upload your P&ID or Select Test Diagrams 📬
+        2) Set Confidence Threshold 📈
+        3) Press to Perform Inference 🚀
+        4) Visualize Model Predictions 🔎
         '''
    )