DOC: suppress debug messages when displaying plots (#38770)

Author: partev

doc/source/user_guide/10min.rst

@@ -730,7 +730,7 @@ The :meth:`~plt.close` method is used to `close <https://matplotlib.org/3.1.1/ap
  ts = ts.cumsum()
 
  @savefig series_plot_basic.png
- ts.plot()
+ ts.plot();
 
 On a DataFrame, the :meth:`~DataFrame.plot` method is a convenience to plot all
 of the columns with labels:
@@ -743,10 +743,10 @@ of the columns with labels:
 
  df = df.cumsum()
 
- plt.figure()
- df.plot()
+ plt.figure();
+ df.plot();
  @savefig frame_plot_basic.png
- plt.legend(loc='best')
+ plt.legend(loc='best');
 
 Getting data in/out
 -------------------