[EDU-2124] - Fix untilAttach examples to contain subscribe#2975

GregHolmes merged 1 commit intomainably/docs:mainfrom

EDU-2124-Fix-incorrect-code-snippet-for-History-with-untilAttachably/docs:EDU-2124-Fix-incorrect-code-snippet-for-History-with-untilAttachCopy head branch name to clipboard