fix naming from XGB to GBR

app.py

@@ -85,7 +85,7 @@ def build_interface():
     # Dropdown to choose model
     with gr.Row():
         model_dropdown = gr.Dropdown(
-            choices=["NuSVR", "XGBoost", "KNN", "Random Forest"], 
+            choices=["NuSVR", "Gradient Boost Regressor", "KNN", "Random Forest"], 
             value="NuSVR", 
             label="Select Model"
         )