Update app.py

app.py

@@ -22,7 +22,7 @@ if st.button("Generate Test Cases"):
 
 # Export test cases
 st.sidebar.title("Export Test Cases")
-if st.sidebar.button("Export Test Cases", key="export_button"):
+if st.sidebar.button("Export Test Cases as CSV", key="export_button"):
     if 'test_cases' in st.session_state:
         test_cases = st.session_state.test_cases
         export_content = backend.export_test_cases(test_cases, 'csv')