Better description of plots

app.py

@@ -230,7 +230,8 @@ def cluster(dataset: str, n_clusters: int, clustering_algorithm: str):
 title = "Clustering with Scikit-learn"
 description = (
     "This example shows how different clustering algorithms work. Simply pick "
-    "the dataset and the number of clusters to see how the clustering algorithms work."
+    "the dataset and the number of clusters to see how the clustering algorithms work. "
+    "Colored cirles are (predicted) labels and black x are outliers."
 )
 
 with gr.Blocks(title=title) as demo: