fix typo

app.py

@@ -64,7 +64,7 @@ description = """<p style="text-align: center;">This is an interactive demo for
 gr.Interface(
     title="Spectral Clustering with scikit-learn",
     description=description,
-    article=artsicle,
+    article=article,
     fn=infer, 
     inputs=[gr.Image(source="canvas", tool="sketch", label="Input Image", shape=[100, 100]),
             gr.Number(label="Number of circles to draw", value=4, precision=0),