correct publisher.city

src/test/resources/xslt/wzb-oai_dc-2-xmlbundle.xslt

@@ -609,7 +609,7 @@
                 <xsl:call-template name="new-metadatum">
                     <xsl:with-param name="key" select="'dc.publisher.city'"/>
                     <xsl:with-param name="language" select="''"/>
-                    <xsl:with-param name="value" select="Berlin"/>
+                    <xsl:with-param name="value" select="'Berlin'"/>
                 </xsl:call-template>
             </xsl:when>
             <xsl:when test="contains(text(), ': ')">