vty reference: merge_doc.xsl: do not omit description tag

vty_additions.xml files provide <description>s for <node> tags, but for unknown
reasons, merge_doc.xsl explicitly omits description tags. Do not omit
<description>s so that they show up in the merged document.

This will take effect when next building the osmo-gsm-manuals using this file.

Change-Id: I418e61705043d4df047d8038c5d61623ba64f2e0

doc/vty/merge_doc.xsl

@@ -18,9 +18,7 @@
       <xsl:copy>
         <xsl:apply-templates select="@*|node()" />
           <xsl:for-each select="$info/*">
-            <xsl:if test="not($info/vty:description)">
-              <xsl:copy-of select="." />
-	    </xsl:if>
+	    <xsl:copy-of select="." />
           </xsl:for-each>
       </xsl:copy>
     </xsl:if>