Changed the regex delimiter for "The url should match"

Using / as a regex delimiter when matching an url is a pain because it
forces to escape all / in the url (and there more often / than " in
an URL).

i18n/ru.xliff

@@ -107,7 +107,7 @@
             <target><![CDATA[/^(?:|я )должен быть на странице "(?P<page>[^"]+)"$/]]></target>
         </trans-unit>
         <trans-unit id="the-url-should-match">
-            <source><![CDATA[/^the (?i)url(?-i) should match (?P<pattern>\/([^\/]|\\\/)*\/)$/]]></source>
+            <source><![CDATA[/^the (?i)url(?-i) should match (?P<pattern>"([^"]|\\")*")$/]]></source>
             <target><![CDATA[/^(?:url|адрес) должен соответствовать "(?P<pattern>(?:[^"]|\\")*)"$/]]></target>
         </trans-unit>
         <trans-unit id="the-element-should-contain">