[docs] text-area: "Helper link" example missing aria-describedby on textarea

Prerequisites

• I have searched for duplicate or closed issues and checked on main that it still appears.
• I have read the contributing guidelines

Describe the issue

Title

[docs] text-area: "Helper link" example missing aria-describedby on textarea

Affected page

https://web.unified-design-system.orange.com/orange/docs/1.4/components/text-area/#helper-link

Description

In the second example of the "Helper link" section (the one with a link but no helper text), the <textarea> does not have an aria-describedby attribute referencing the link, unlike the equivalent example in the text-input documentation which does.

Current (buggy) HTML

<div class="text-area">
  <div class="text-area-container mt-large">
    <label id="labelTextAreaHelperLink" for="textAreaHelperLink">Additional comments</label>
    <textarea id="textAreaHelperLink" class="text-area-field" placeholder=" "></textarea>
  </div>
  <a href="#" id="feedbackTextHelpMoreLink" aria-labelledby="feedbackTextHelpMoreLink labelTextAreaHelperLink" class="link link-small">
    More information <span class="visually-hidden">on</span>
  </a>
</div>

Expected HTML

(matching the text-input equivalent at https://web.unified-design-system.orange.com/orange/docs/1.4/components/text-input/#helper-link)

<div class="text-area">
  <div class="text-area-container mt-large">
    <label id="labelTextAreaHelperLink" for="textAreaHelperLink">Additional comments</label>
    <textarea id="textAreaHelperLink" aria-describedby="feedbackTextHelpMoreLink" class="text-area-field" placeholder=" "></textarea>
  </div>
  <a href="#" id="feedbackTextHelpMoreLink" aria-labelledby="feedbackTextHelpMoreLink labelTextAreaHelperLink" class="link link-small">
    More information <span class="visually-hidden">on</span>
  </a>
</div>

Why this matters

Without aria-describedby, screen reader users are not informed that a related "More information" link exists for the field. The text-input component's identical pattern (field + label + link, no helper text) correctly wires this via aria-describedby, so text-area should be consistent.

Any information that could help to resolve the issue. (window.navigator.userAgent)

No response

What version of the documentation are you using?

1.4.0

Open the text-area documentation's “Helper link” section and compare its second example with the equivalent text-input example. Update the textarea markup so it references the “More information” link through aria-describedby, then verify that the rendered example matches the expected HTML and remains accessible.