Update unit-testing-platform-extensions-fakes.md

Author: Youssef1313

docs/core/testing/unit-testing-platform-extensions-fakes.md

@@ -26,4 +26,4 @@ To use the new extension with an existing project, update the existing `Microsof
 + <PackageReference Include="Microsoft.Testing.Extensions.Fakes" Version="17.11.0-beta.24319.3" />
 ```
 
-If you are using MSTest.Sdk 3.7 or later, use `EnableMicrosoftTestingExtensionsFakes` property to enable the extension and don't add the package reference.
+If you are using MSTest.Sdk 3.7 or later, use `EnableMicrosoftTestingExtensionsFakes` property to enable the extension and don't add the package reference.