Update app.py

Added more explanations to markdown

app.py

@@ -49,7 +49,9 @@ with gr.Blocks() as demo:
     gr.Markdown(f"# {title}")
     gr.Markdown(
         """
-        ## This example shows how a feature selection can be easily integrated within a machine learning pipeline.
+        ## This example shows how a feature selection can be easily integrated within a machine learning pipeline \
+        using a synthetic dataset. The number of features to select and other parameters to generate the toy dataset \
+        are provided as components to play around.
 
         [Original Example](https://scikit-learn.org/stable/auto_examples/feature_selection/plot_feature_selection_pipeline.html#sphx-glr-auto-examples-feature-selection-plot-feature-selection-pipeline-py)
         """