doc: allow in-line HTML in MarkDown documents
doc: allow in-line HTML in MarkDown documents

The GitHub style for Pull Request and Issue templates add HTML tags for
some advanced usage. The MarkDown linter should not give warnings when
these are used.

Signed-off-by: Niels de Vos <7bda0c0ee7f47171cc808e9e60292cbc5d8140dd@redhat.com>

ceph/ceph-csi,ceph/ceph-csi,ceph/ceph-csi,ceph/ceph-csi