[docs] apply the "feedback" docs component to all pages

[heyMP]

Description

We currently handle the "feedback" section in two ways.

1. We have feedback component (docs/_includes/feedback.html) that is handles the feedback footer for all elements & patterns pages.

docs/elements/elements.html

 {% include 'feedback.html' %}

2. We add a block of HTML to each page that contains some classes and formatting for re-creating the feedback section.

docs/release-notes.njk

<div class="multi-column--min-300-wide section section--palette-default container feedback">
  <div>
    {% call getstarted.section("Feedback") -%}
      <p>To give feedback about anything on this page, <a href="mailto:[email protected]">contact us</a>.</p>
    {%- endcall %}
  </div>
  <div>
    {% call getstarted.section("Other libraries") -%}
      <p>To learn more about our other libraries, visit <a href="../../get-started">this page</a>.</p>
    {%- endcall %}
  </div>
</div>

Suggested solution

We should improve the feedback component logic so that it can work beyond the elements & patterns pages.

Example API

No response

Additional context

No response