docs: close paragraphs before preformatted text

docs: close paragraphs before preformatted text

It's illegal to nest block-level elements such as <pre> inside <p> in
HTML. This means that when the paragraphs gets closed after a <pre>-tag,
we end up closing a non-existent tag, so the browser inserts a dummy
<p>-tag. This is entirely pointless, so let's just close these tags
before the <pre>-tag instead.

Signed-off-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@intel.com>