fixed back slash formatting in f string

app.py

@@ -112,9 +112,12 @@ if __name__ == "__main__":
         ### EVALUATION METRICS COMPARISION ###
 
         st.subheader("Evaluation Metrics Comparision")  # , divider='rainbow')
+        metric_names = "\n".join(
+            ["- " + evaluation_metric.name for evaluation_metric in EVALUATION_METRICS]
+        )
         st.markdown(
             "The different evaluation metrics we have for the NER task are\n"
-            f"{''.join(['- '+evaluation_metric.name+'\n' for evaluation_metric in EVALUATION_METRICS])}"
+            f"{metric_names}"
         )
 
         with st.expander("View Predictions Details"):