[1.7.x] Fixed #22622 -- Added ugettext_lazy import in docs
[1.7.x] Fixed #22622 -- Added ugettext_lazy import in docs

Backport of 7271f5db78 from master

oscaro/django,oscaro/django,oscaro/django,jyotsna1820/django,jyotsna1820/django,jyotsna1820/django,oscaro/django,jyotsna1820/django