Editorial: Fix sentence structure (#390)

Improves sentence clarity by fixing the grammatical structure in the coordinator lifecycle description. The change corrects the parallel structure of the sentence to improve readability.

Fixed comma placement to create proper parallel structure in the sentence describing coordinator promise resolution

Author: mohamedamir

index.html

@@ -576,7 +576,7 @@ <h2>
     <p>
       The coordinator manages the lifecycle of the interaction's {{Promise}}
       and its associated {{AbortSignal}} (if any), including resolution with
-      the user's selected [=digital credential=], the [=holder=]'s response, or
+      the user's selected [=digital credential=] or the [=holder=]'s response, or
       rejection due to errors or the user or program aborting the [=credential
       request=].
     </p>