[1.7.x] Added missing comma in LocMemCache example.
[1.7.x] Added missing comma in LocMemCache example.

Backport of 9d6914da668d9a38537d4c29e3601f06dd830477 from master

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