* Expand dropdown explanation for use of `<a>`, use `<button>`s for modal examples
* Remove redundant `role="button"` from collapse test `<button>` elements
* Tweak language
* Tweak collapse prose
* Using the new helper in the doc
* Remove input from `Tab` access
* Change scrollspy code examples
* Reordering tables for JS
* Fix for parcel file
* Center align all the code example texts in layout
* Alphabetical reorder the helpers