fix some wording in some strings

app.py

@@ -107,8 +107,8 @@ if uploaded_file:
                     label2id[correct_label],
                 )
 
-    if st.button("Submit all feedback?", key=f'submit'):
+    if st.button("Submit all feedback", key=f'submit'):
         run = st.session_state.wandb_run
         run.log({'feedback_table': feedback_table})
         run.finish()
-        st.success(f"Feedback for Image {i} submitted!")
+        st.success(f"Feedback submitted!")