Fix missing parenthesis

app.py

@@ -92,7 +92,7 @@ if cost_function == 'RMSE-Loss':
              # add a line to the plot
              plt.plot(X[jnp.dot(X, w).argsort(), 1], jnp.dot(X, w).sort(), 'c--')
      # Plot the final line
-     plt.plot(X[jnp.dot(X, w).argsort(), 1], jnp.dot(X, w).sort(), 'k-', label='Final line'
+     plt.plot(X[jnp.dot(X, w).argsort(), 1], jnp.dot(X, w).sort(), 'k-', label='Final line')
      status_text.text('Done!')