ADT: eng : Bicep file needs to be fixed to adapt to guidelines of engineering system. (#22619)

* Bicep file needs to be fixed to adapt to guidelines of engineering pipeline

* Update prerequisite readme.md

Author: azabbasi

sdk/digitaltwins/Azure.DigitalTwins.Core/tests/prerequisites/prerequisite readme.md

@@ -17,13 +17,13 @@
 
 ### Run the setup script
 
-The script outputs [test-resources.bicep](https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/digitaltwins/test-resources.bicep) file in the root folder [digitaltwins](https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/digitaltwins)
+The script outputs [test-resources.bicep](https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/digitaltwins/test-resources_needs_fixing.bicep) file in the root folder [digitaltwins](https://github.com/Azure/azure-sdk-for-net/tree/main/sdk/digitaltwins)
 
 - `.\setup.ps1`
 
 ### Generate the ARM template
 
-The ARM template [test-resources.json](https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/digitaltwins/test-resources.json) is generated from the [test-resources.bicep](https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/digitaltwins/test-resources.bicep) file by running the following script
+The ARM template [test-resources.json](https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/digitaltwins/test-resources.json) is generated from the [test-resources.bicep](https://github.com/Azure/azure-sdk-for-net/blob/main/sdk/digitaltwins/test-resources_needs_fixing.bicep) file by running the following script
 
 - `.\generateArmTemplate.ps1`