doc: mention <link> can be inside of <command>, but not <xref>

This was discussed in commit 9081bddbd.

Reported-by: Peter Eisentraut
Discussion: https://postgr.es/m/flat/87o8pco34z.fsf@wibble.ilmari.org

diff --git a/doc/src/sgml/README.links b/doc/src/sgml/README.links
index 4181e0877b5b5cabb28fa3167ea33b340f936ac4..65df9c111f3b5b4c15e57bafbc1f173f3ad7e12e 100644 (file)
--- a/doc/src/sgml/README.links
+++ b/doc/src/sgml/README.links
@@ -22,6 +22,7 @@ endterm=
 <link>
        use to supply text for the link, only uses linkend, requires </link>
        http://www.oasis-open.org/docbook/documentation/reference/html/link.html
+       can be embedded inside of <command>, unlike <xref>
 
 
 External Linking