removed mention of having to create own fallbacks

Author: jakecosgrove

docs/_includes/custom-components/direct-message-feature-list.html

@@ -326,8 +326,7 @@ <h3 class="nhsuk-heading-s">Sending messages</h3>
           The rules that trigger when a fallback is used for each message channel in a routing plan
         </div>
         <p>
-          If you send direct messages with the NHS App you must create your own fallback functionality and adhere to the
-          following:
+          If you send direct messages with the NHS App you must adhere to the following:
         </p>
         <h4 class="nhsuk-heading-xs">1. Time sensitive NHS App messages should fallback when:</h4>
         <ul class="nhsuk-list nhsuk-list--bullet">