sw from-bottom relative orientation: link ODF proposal

Change-Id: I1914c7d58706e54ec559d992423a47fc27596ac4
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/93948
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>
Tested-by: Jenkins
diff --git a/schema/libreoffice/OpenDocument-schema-v1.3+libreoffice.rng b/schema/libreoffice/OpenDocument-schema-v1.3+libreoffice.rng
index 7cb6eaa..408754e 100644
--- a/schema/libreoffice/OpenDocument-schema-v1.3+libreoffice.rng
+++ b/schema/libreoffice/OpenDocument-schema-v1.3+libreoffice.rng
@@ -2429,7 +2429,7 @@ xmlns:loext="urn:org:documentfoundation:names:experimental:office:xmlns:loext:1.
    </rng:optional>
  </rng:define>

  <!-- TODO no proposal -->
  <!-- https://issues.oasis-open.org/browse/OFFICE-4073 -->
  <rng:define name="common-vertical-rel-attlist" combine="interleave">
    <rng:optional>
      <rng:attribute name="loext:vertical-rel">