add first 500 tokens

app.py

@@ -367,6 +367,10 @@ def main():
             first_10_tokens = input_ids[:10]
             first_10_tokens_text = tokenizer.convert_ids_to_tokens(first_10_tokens)
             st.write(first_10_tokens_text)
+            st.write("First 500 tokens:")
+            first_500_tokens = input_ids[:500]
+            first_500_tokens_text = tokenizer.convert_ids_to_tokens(first_500_tokens)
+            st.write(first_500_tokens_text)
             st.write("[RecursiveCharacterTextSplitter](%s) parameters used:" % url)
             st.write(
                 "        chunk_size=%s"