fix: change p for h2 for order accessibility

[ErriGarcia]

Problem:
The heading elements in the document are not structured in a sequentially-descending order, which can cause difficulties for users relying on assistive technologies to navigate and understand the content.

Solution:
We have updated the document by changing the

element to an appropriate

element to ensure a correct and sequential heading structure. This change will improve the accessibility and readability of the document, making it easier for all users, including those using assistive technologies, to understand the content hierarchy.

Changes Made:
Replaced the

element with an

element to indicate the correct heading level and maintain a sequential order.

Please review the changes and let us know if any further modifications or adjustments are required.

Thank you for your attention to this matter.

@ttkapostol @ErriGarcia @NataliaBlanco