Variant links are currently:
<a href="/zh-tw/Wikipedia:%E4%BA%92%E5%8A%A9%E5%AE%A2%E6%A0%88/%E6%B6%88%E6%81%AF" >台灣正體</a>
Changing them to the following style may be better (eg. better Google results):
<a href="/zh-tw/A" lang="zh-tw" hreflang="zh-tw" rel="alternate">台灣正體</a>
See also bug 24741.
Version: 1.17.x
Severity: enhancement