header for sample run

ml_algorithms/linear_regression_gradient_descent.py

@@ -147,6 +147,7 @@ def interactive_run():
     X, y = random_data()
     theta = [0, 0]  # initial values
     model = LinearRegressionGradient(theta)
+    mark("# Example")
     n = st.slider("Number of samples", min_value=10, max_value=200, step=10)
     if st.button("generate new data and solve"):
         X, y = random_data(n=n)