Update app.py

app.py

@@ -13,6 +13,8 @@ from transformers import AutoTokenizer, AutoModel
 from tokenizers import Tokenizer, AddedToken
 from st_click_detector import click_detector
 
+st.title('Graphviz Gallery: https://graphviz.org/gallery/')
+
 st.graphviz_chart(''' 
 digraph G2 {
     node [shape=plaintext];