Update app.py

app.py

@@ -148,7 +148,7 @@ with gr.Blocks(
                     border-radius:8px; padding:10px 16px; font-size:0.92rem;
                     margin-bottom:8px; line-height:1.6;">
             📚 <strong style="color:#ffffff;">For students only.</strong>
-            AstroBot explains astrological <em>concepts</em> drawn from your course materials.
+            AstroBot explains astrological concepts drawn from custom course materials.
             It does <strong style="color:#ffffff;">not</strong> make personal predictions
             or interpret individual birth charts.
         </div>