Update README.md

Update outdated link in guide

Author: andersgMSFT

README.md

@@ -19,7 +19,7 @@ Notes:
 
 ## Try the sample yourself
 
-Follow the steps in the [Try our sample apps](https://github.com/microsoft/AL-Go/blob/PPPreview/Scenarios/TryPowerPlatformSamples.md) guide to try the sample with your own tenant.
+Follow the steps in the [Try our sample apps](https://github.com/microsoft/AL-Go/blob/main/Scenarios/TryPowerPlatformSamples.md) guide to try the sample with your own tenant.
 
 ## Per Tenant Extension Project