Ch07: fix the position of the title in the decision-region plot

[vmirly]

Original:

plt.text(10.2, -0.5,
         s='OD280/OD315 of diluted wines',
         ha='center', va='center', fontsize=12)

plt.tight_layout()
#plt.savefig('images/07_11.png', dpi=300, bbox_inches='tight')
plt.show()

Change:

plt.tight_layout()

plt.text(0, -0.2,
         s='OD280/OD315 of diluted wines',
         ha='center', va='center', fontsize=12,
         transform=axarr[1].transAxes)

[vmirly]

And same change here:

Original:

plt.text(10.2, -0.5,
         s='OD280/OD315 of diluted wines',
         ha='center', va='center', fontsize=12)

plt.tight_layout()
#plt.savefig('images/07_11.png', dpi=300, bbox_inches='tight')
plt.show()

Change:

plt.tight_layout()
plt.text(0, -0.2,
         s='OD280/OD315 of diluted wines',
         ha='center',
         va='center',
         fontsize=12,
         transform=axarr[1].transAxes)

[rasbt]

ok thanks, i can make that change