Remove occurences of dotnet.config

Author: mariam-abdulla

docs/core/testing/unit-testing-with-dotnet-test.md

@@ -91,11 +91,14 @@ Due to these issues, .NET has introduced a new `dotnet test` mode specifically d
 
 To address the issues encountered when running `dotnet test` with MTP in VSTest mode, .NET introduced a new mode in the .NET 10 SDK that's specifically designed for MTP.
 
-To enable this mode, add a `dotnet.config` file to the root of the repository or solution.
-
-```ini
-[dotnet.test.runner]
-name = "Microsoft.Testing.Platform"
+To enable this mode, add the following configuration to your `global.json` file:
+
+```json
+{
+    "test": {
+        "runner": "Microsoft.Testing.Platform"
+    }
+}
 ```
 
 > [!IMPORTANT]
@@ -123,7 +126,7 @@ Since this mode is specifically designed for Microsoft.Testing.Platform, neither
 
 For users of MTP that are using the VSTest mode of `dotnet test`, there are few actions needed to migrate to the newer `dotnet test` experience:
 
-1. Add `dotnet.config` in the root of your repository, as shown above.
+1. Add some configuration to your `global.json` file, as shown above.
 1. Remove `TestingPlatformDotnetTestSupport` MSBuild property, as it's no longer required.
 1. Remove `TestingPlatformCaptureOutput` and `TestingPlatformShowTestsFailure` MSBuild properties, as they are no longer used by the new `dotnet test`.
 1. Remove the extra `--`, for example `dotnet test -- --report-trx` should become `dotnet test --report-trx`.

docs/core/whats-new/dotnet-10/sdk.md

@@ -215,11 +215,14 @@ A new `<ContainerImageFormat>` property allows you to explicitly set the format
 
 ## Support for Microsoft Testing Platform in `dotnet test`
 
-Starting in .NET 10, `dotnet test` natively supports [Microsoft.Testing.Platform](../../testing/microsoft-testing-platform-intro.md). To enable this feature, add the following configuration to your *dotnet.config* file:
+Starting in .NET 10, `dotnet test` natively supports [Microsoft.Testing.Platform](../../testing/microsoft-testing-platform-intro.md). To enable this feature, add the following configuration to your *global.json* file:
 
-```ini
-[dotnet.test.runner]
-name = "Microsoft.Testing.Platform"
+```json
+{
+    "test": {
+        "runner": "Microsoft.Testing.Platform"
+    }
+}
 ```
 
 For more details, see [Testing with `dotnet test`](../../testing/unit-testing-with-dotnet-test.md).