docs(dateFilter): correct example for date 'fullDate filter'
docs(dateFilter): correct example for date 'fullDate filter'

The equivalent expanded example for 'fullDate' is given as 'EEEE, MMMM d,y'
whereas it should be 'EEEE, MMMM d, y'. With added whitespace.

Closes #7350

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