docs(ngPluralize): spell Mary's name correctly
docs(ngPluralize): spell Mary's name correctly

Update ngPluralize.js

Just a silly change to the name of one of the examples that appears to be a typo. Changing Marry to
Mary as the first would be a verb and the latter would be an extremely common name.

Closes #7884

ggershoni/angular.js,ggershoni/angular.js,ggershoni/angular.js,ggershoni/angular.js