HN removes the final period from the URL.  Try <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Microsoft_Corp._v._Lindows.com,_Inc%2e" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Microsoft_Corp._v._Lindows.com...</a>