Update README.md

Author: r-brown

README.md

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 [![Build Status](https://travis-ci.org/Labs64/NetLicensingClient-cpp.svg?branch=master)](https://travis-ci.org/Labs64/NetLicensingClient-cpp)
 
-C++ wrapper for Labs64 NetLicensing [RESTful API](http://l64.cc/nl10)
+C++ wrapper for Labs64 NetLicensing [RESTful API](https://netlicensing.io/wiki/restful-api)
 
 Visit Labs64 NetLicensing at https://netlicensing.io