[BUG] URL rewrite article validation errors

[duncdrum]

the URL rewrite article contains multiple instances
of text literal programlistings

<programlisting language="xml">&lt;dispatch xmlns="http://exist.sourceforge.net/NS/exist"&gt;
  &lt;forward url="{$exist:controller}/modules/transform.xq"&gt;
    &lt;add-parameter name="doc" value="{$exist:resource}.xml"/&gt;
  &lt;/forward&gt;
&lt;/dispatch&gt;</programlisting>

The test suite rightfully flags those:

documentation/src/main/xar-resources/modules/test-suite.xql

Lines 137 to 157 in 06ef4fb

	(:~ Make sure that programlistings for xml do not contain string contents
	: use <tag> for short snippets, listing-x.xml files for trees.
	: @see author-reference
	: @return empty-sequence or name of document with faulty listing
	:)
	declare
	%test:name('Pro angular brackets')
	%test:assertEmpty
	function tests:no-ecaped-listings() {
	let $target := collection($config:data-root)//db5:programlisting[@language='xml']
	let $cdata := for $n in $target
	let $title := $n/ancestor::db5:article/db5:info/db5:title
	return
	if ($n/string() eq '')
	then ()
	else (util:document-name($title))
	return
	distinct-values($cdata)
	};

why was #872 merged despite the test failures

[joewiz]

Mea culpa! I'm not sure why I missed the error. I'll submit a PR fixing this.