Useability update.

Author: thinkingserious

USE_CASES.md

@@ -10,7 +10,7 @@ This documentation provides examples for specific use cases. Please [open an iss
 <a name="transactional-templates"></a>
 # Transactional Templates
 
-For this example, we assume you have created a [transactional template](https://sendgrid.com/docs/User_Guide/Transactional_Templates/index.html). Following is the template content we used for testing.
+For this example, we assume you have created a [transactional template](https://sendgrid.com/docs/User_Guide/Transactional_Templates/index.html) in the UI or via the API. Following is the template content we used for testing.
 
 Template ID (replace with your own):