Add example link

app.py

@@ -45,7 +45,7 @@ def select_features(method,num_features):
 title = "Selecting features with Sequential Feature Selection"
 with gr.Blocks(title=title) as demo:
     gr.Markdown(f"## {title}")
-    gr.Markdown("This app demonstrates feature selection techniques using model based selection and sequential feature selection. The app uses the diabetes dataset from sklearn")
+    gr.Markdown("This app demonstrates feature selection techniques using model based selection and sequential feature selection. The app uses the diabetes dataset from sklearn. This app is developed based on [scikit-learn example](https://scikit-learn.org/stable/auto_examples/feature_selection/plot_select_from_model_diabetes.html#sphx-glr-auto-examples-feature-selection-plot-select-from-model-diabetes-py)")
 
     method = gr.Radio(["model", "sfs-forward", "sfs-backward"], label="Method")
     num_features = gr.Textbox(label="Number of features")