Fix plot

Author: jklymak

doc/api/index.rst

@@ -26,14 +26,15 @@ methods on them to plot data, add axis labels and a figure title.
    import matplotlib.pyplot as plt
    import numpy as np
 
-   x = np.arange(0, 4, 0.1)
+   x = np.arange(0, 4, 0.05)
    y = np.sin(x*np.pi)
 
    fig, ax = plt.subplots(figsize=(3,2), constrained_layout=True)
    ax.plot(x, y)
    ax.set_xlabel('t [s]')
    ax.set_ylabel('S [V]')
-   fig.suptitle('Sine wave')
+   ax.set_title('Sine wave')
+   fig.set_facecolor('lightsteelblue')
 
 
 Modules