added github project path

app.py

@@ -178,4 +178,5 @@ st.markdown("### References")
 st.markdown("1. https://www.sbert.net/examples/applications/semantic-search/README.html")
 st.markdown("2. https://www.sbert.net/docs/pretrained-models/msmarco-v3.html")
 st.markdown("3. Semantic search [colab](https://colab.research.google.com/drive/12cn5Oo0v3HfQQ8Tv6-ukgxXSmT3zl35A?usp=sharing)")
+st.markdown("4. [project code on github](https://github.com/vanderbilt-data-science/abstract-search)")
 #st.markdown("4. [ClimateBERT](https://climatebert.ai/), [paper](https://arxiv.org/abs/2110.12010)")