Update to About GitHub Premium support (#53635)

content/support/learning-about-github-support/about-github-premium-support.md

@@ -129,7 +129,7 @@ If you use a custom or unsupported plug-in, module, or custom code, {% data vari
 
 ## Receiving credits for missed responses to support tickets
 
-If you don't receive an initial response within the guaranteed response time to more than four tickets in a given quarter based on {% data variables.product.company_short %}'s fiscal year, you're eligible for a credit. To honor the SLA, {% data variables.product.company_short %} will refund 20% of the quarterly {% data variables.contact.premium_support %} fee. To receive the refund, you must submit a credit request.
+If you are on the Premium or Premium Plus support plan, and you don't receive an initial response within the guaranteed response time to more than four tickets in a given quarter based on {% data variables.product.company_short %}'s fiscal year, you're eligible for a credit. To honor the SLA, {% data variables.product.company_short %} will refund 20% of the quarterly {% data variables.contact.premium_support %} fee. To receive the refund, you must submit a credit request.
 
 The credit request must be made within 30 days of the end of the quarter during which {% data variables.contact.premium_support %} did not respond to your tickets within the designated response time. Credit requests will not be honored if the respective deadline has passed. Once the respective deadline passes, you have waived the ability to claim a refund for the qualified credit. Credit requests may take the form of a refund or credit to your account, cannot be exchanged into a cash amount, require you to have paid any outstanding invoices, and expire upon termination of your agreement with {% data variables.product.company_short %}.