Issue #3416788 by jldust: SDC Components: Review all component schema structure

components/.icons/icons.twig

components/.icons/sprite.svg.twig

components/accordion-group/README.md

components/accordion-group/accordion-group.component.yml

components/accordion-group/accordion-group.css

components/accordion-group/accordion-group.stories.yml

components/accordion-group/accordion-group.twig

components/accordion-group/src/accordion-group.scss

components/accordion-item/accordion-item.component.yml

components/accordion-item/accordion-item.css

components/accordion-item/accordion-item.js

components/accordion-item/accordion-item.twig

components/accordion-item/src/accordion-item.js

components/accordion-item/src/accordion-item.scss

components/accordion/README.md

components/accordion/accordion.component.yml

components/accordion/accordion.css

components/accordion/accordion.js

components/accordion/accordion.stories.yml

components/accordion/accordion.twig