Update readme.md

Author: staleycyn

readme.md

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 ## Welcome
 
-- **[Link to Exercises and Demonstrations (HTML format)](https://microsoftlearning.github.io/AZ-700-Designing-and-Implementing-Microsoft-Azure-Networking-Solutions/)**
+- **[Link to Exercises (HTML format)](https://microsoftlearning.github.io/AZ-700-Designing-and-Implementing-Microsoft-Azure-Networking-Solutions/)**
 - **Are you a MCT?** - Have a look at our [GitHub User Guide for MCTs](https://microsoftlearning.github.io/MCT-User-Guide/)
 - To preview this course in a self-paced format, see our **[interactive lab simulations](https://mslabs.cloudguides.com/guides/AZ-700%20Lab%20Simulations%20-%20Designing%20and%20implementing%20Microsoft%20Azure%20networking%20solutions)**. You may find slight differences between the interactive simulations and the hosted labs, but the core concepts and ideas being demonstrated are the same.