Tweak wording

Author: alvinashcraft

uwp/app-resources/images-tailored-for-scale-theme-contrast.md

@@ -145,7 +145,7 @@ bitmapImage.SetSourceAsync(imageFileStream);
 this.myXAMLImageElement.Source = bitmapImage;
 ```
 
-For the same effect at a global level, you *can* override the qualifier values in the default **ResourceContext**. But instead we advise you to call [**ResourceContext.SetGlobalQualifierValue**](/uwp/api/windows.applicationmodel.resources.core.resourcecontext.setglobalqualifiervalue#Windows_ApplicationModel_Resources_Core_ResourceContext_SetGlobalQualifierValue_System_String_System_String_Windows_ApplicationModel_Resources_Core_ResourceQualifierPersistence_). You set values one time with a call to **SetGlobalQualifierValue** and then those values are in effect on the default **ResourceContext** each time you use it for lookups. By default, the [**ResourceManager**](/uwp/api/windows.applicationmodel.resources.core.resourcemanager) class uses the default **ResourceContext**.
+To achieve same effect at a global level, you *can* override the qualifier values in the default **ResourceContext**. But instead we advise you to call [**ResourceContext.SetGlobalQualifierValue**](/uwp/api/windows.applicationmodel.resources.core.resourcecontext.setglobalqualifiervalue#Windows_ApplicationModel_Resources_Core_ResourceContext_SetGlobalQualifierValue_System_String_System_String_Windows_ApplicationModel_Resources_Core_ResourceQualifierPersistence_). You set values one time with a call to **SetGlobalQualifierValue** and then those values are in effect on the default **ResourceContext** each time you use it for lookups. By default, the [**ResourceManager**](/uwp/api/windows.applicationmodel.resources.core.resourcemanager) class uses the default **ResourceContext**.
 
 ```csharp
 Windows.ApplicationModel.Resources.Core.ResourceContext.SetGlobalQualifierValue("Contrast", "high");