Update app.py

updated the source code

app.py

@@ -862,8 +862,8 @@ content = """
 <h2 style="color: black;">An AI Model for Analyzing Math Strategies</h2>
 
 <h3 style="color: white; text-align: center">
-    <a href="https://drive.google.com/file/d/1lbEpg8Se1ugTtkjreD8eXIg7qrplhWan/view" style="color: gr.themes.colors.red; text-decoration: none;">Link To Paper</a> | 
-    <a href="https://huggingface.co/spaces/suryadev1/astra/tree/main" style="color: #1E90FF; text-decoration: none;">Repo Link</a> | 
+    <a href="https://sites.google.com/view/astra-research" style="color: gr.themes.colors.red; text-decoration: none;">Papers</a> | 
+    <a href="https://huggingface.co/spaces/suryadev1/astra/tree/main" style="color: #1E90FF; text-decoration: none;">Source Code</a> | 
     <a href="https://drive.google.com/file/d/1wussSAYV5WfRSgYNEDgxWNqMUNoiu65u/view" style="color: #1E90FF; text-decoration: none;">User Guide</a>