Update app.py

updated the description

app.py

@@ -862,8 +862,7 @@ content = """
 <h2 style="color: black;">An AI Model for Analyzing Math Strategies</h2>
 
 <h3 style="color: white; text-align: center">
-    <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://sites.google.com/view/astra-research" style="color: gr.themes.colors.red; text-decoration: none;">Publications & Software</a> | 
     <a href="https://drive.google.com/file/d/1wussSAYV5WfRSgYNEDgxWNqMUNoiu65u/view" style="color: #1E90FF; text-decoration: none;">User Guide</a>
     
     
@@ -872,7 +871,8 @@ content = """
 <p style="color: white;">Welcome to a demo of ASTRA. ASTRA is a collaborative research project between researchers at the 
 <a href="https://sites.google.com/site/dvngopal/" style="color: #1E90FF; text-decoration: none;">University of Memphis</a> and 
 <a href="https://www.carnegielearning.com" style="color: #1E90FF; text-decoration: none;">Carnegie Learning</a> 
-to utilize AI to improve our understanding of math learning strategies.</p>
+to utilize AI to improve our understanding of math learning strategies. 
+This code is licensed under the MIT license: see LICENSE for details. If you use this in a published work, please cite the related papers.</p>
 
 <p style="color: white;">This demo has been developed with a pre-trained model (based on an architecture similar to BERT ) that learns math strategies using data 
 collected from hundreds of schools in the U.S. who have used Carnegie Learning’s MATHia (formerly known as Cognitive Tutor), the flagship Intelligent Tutor that is part of a core, blended math curriculum.