Remove extra spaces between navbar brand image and text

While working with navbars, I've spotted something that I think is not here on purpose.

Indeed, this is the line break in the source code that adds a space between the image and the text.

If we remove this line break, the string doesn't have anymore those extra spaces and becomes right next to the image:

This PR is a proposal to align all the content of the <a> and to handle the spacing with a .me-1 (see it in action here)

Another technique would be to do something like that whose I'm not a big fan of:

<a class="navbar-brand" href="#">
  <img src="/docs/{{< param docs_version >}}/assets/brand/bootstrap-logo.svg" alt="" width="30" height="24" class="d-inline-block align-text-top me-1"><!--
  -->Bootstrap<!--
--></a>

Feel free to close this PR if you find it irrelevant or if it is something not very useful to change.