A.19 WCAG 2.1 Success Criterion 2.4.10 − Section Headings
Use section headings such as titles, headings and subheadings, to break up content into smaller chunks. This helps users digest the content more easily, and makes it easier for all users to navigate quickly through the information.
Before Rectification
The example above has a large piece of text. This could be difficult to read by some users who may have learning disabilities. Besides, for people using screen readers, this is a long piece of text to read.
After Rectification
By breaking the information into sections, it would be easier to understand.
WCAG 2.1 Reference:
https://www.w3.org/WAI/WCAG21/Understanding/section-headings