<div class="not-found">
  <h1>
    It would be regular 404 page
  </h1>
  <h3>
    ...except, we don't receive
    <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/404"
      >404</a
    >
    response status!
  </h3>
  <p>Go back to <a routerLink="/home">Homepage</a>,</p>
  <p>
    or consider making Flathub better, by contributing to our
    <a href="https://github.com/flathub/">open source services</a>.
  </p>
</div>

<div class="not-found">
  <h1>
    It would be regular 404 page
  </h1>
  <h3>
    … except, we didn’t receive a
    <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/404"
      >404</a
    >
    response status!
  </h3>
  <p>Go back to the <a routerLink="/home">Homepage</a>,</p>
  <p>
    or consider making Flathub better, by contributing to our
    <a href="https://github.com/flathub/">open source services</a>.
  </p>
</div>

Fix English of the not-404 page
Fix English of the not-404 page

It was quite broken.
