Update documentation location

Author: aaronagios

html/docs/index.html

@@ -74,7 +74,7 @@ <h1 class="PageTitle">
 
 <p align="center">
 <strong>
-Documentation for Nagios Core can now be found online at <a href="https://go.nagios.com/nagioscore/docs/">https://go.nagios.com/nagioscore/docs/</a>
+Documentation for Nagios Core can now be found online at <a href="https://assets.nagios.com/downloads/nagioscore/docs/nagioscore/4/en/toc.html">https://assets.nagios.com/downloads/nagioscore/docs/nagioscore/4/en/toc.html</a>
 </strong>
 </p>
 
@@ -94,4 +94,4 @@ <h1 class="PageTitle">
 
 </BODY>
 
-</HTML>
+</HTML>