the olink template will add that (or not, depending on
how that template is customized).
<xsl:param name="olink.outline.ext" select="'.olink'" doc:type='string'/>
<xsl:param name="olink.pubid" select="'pubid='" doc:type='string'/>
<xsl:param name="olink.sysid" select="'sysid='" doc:type='string'/>
-<xsl:param name="olink.resolver" select="'/cgi-bin/olink?'" doc:type='string'/>
+<xsl:param name="olink.resolver" select="'/cgi-bin/olink'" doc:type='string'/>
<xsl:param name="shade.verbatim" select="0" doc:type="boolean"/>