Update app.py

app.py

@@ -402,7 +402,7 @@ def create_interface():
                 <em>Extracting Keywords from Crowdsourced Collections</em>.
             </p><br><br> 
            <p style="font-size: 14px; line-height: 1.8; margin: 0;">
-            The code for this tool was built with the aid of Claude Opus 4.
+            The code for this tool was built with the aid of Claude Sonnet 4.
             </p>
         </div>
         """)