message: fix(scss): updated selector used on card fixes
diff: @mixin content-group-cards-item {
  .#{$prefix}--content-group-cards-item {
  - h3,
  - p {
  + .#{$prefix}--card__title,
  + .#{$prefix}--card__content {
  width: 90%;
  max-width: carbon--mini-units(80);
  }
  