docs: update several URLs to point to docs.named-data.net

Change-Id: I4bab897f17e2b929675119198c9eab0309b6cc3e
diff --git a/tools/nfd-status-http-server-files/nfd-status.xsl b/tools/nfd-status-http-server-files/nfd-status.xsl
index d2015b1..f0656c6 100644
--- a/tools/nfd-status-http-server-files/nfd-status.xsl
+++ b/tools/nfd-status-http-server-files/nfd-status.xsl
@@ -22,7 +22,7 @@
     <xsl:variable name="version">
       <xsl:apply-templates select="nfd:nfdStatus/nfd:generalStatus/nfd:version"/>
     </xsl:variable>
-    <span class="grey">Powered by </span><a target="_blank" href="https://named-data.net/doc/NFD/"><span class="green">NFD version <xsl:value-of select="$version"/></span></a><span class="grey">.</span>
+    <span class="grey">Powered by </span><a target="_blank" href="https://docs.named-data.net/NFD/"><span class="green">NFD version <xsl:value-of select="$version"/></span></a><span class="grey">.</span>
   </footer>
   </body>
   </html>