Changed the url to an Azure video --Inside the Microsoft FPGA-based configurable cloud (video)-- to a China-accessible url

Author: jackharter5

articles/machine-learning/service/concept-accelerate-with-fpgas.md

@@ -75,7 +75,7 @@ To get started deploying trained DNN models to FPGAs in the Azure cloud, see [De
 
 Check out these videos and blogs:
 
-+ [Hyperscale hardware: ML at scale on top of Azure + FPGA : Build 2018 (video)](https://www.youtube.com/watch?v=BMgQAHIx2eY)
++ [Hyperscale hardware: ML at scale on top of Azure + FPGA : Build 2018 (video)](https://channel9.msdn.com/events/Build/2018/BRK3202)
 
 + [Inside the Microsoft FPGA-based configurable cloud (video)](https://channel9.msdn.com/Events/Build/2017/B8063)