[Openid-specs-risc] [openid/sharedsignals] a7272a: Fixes #60 - are subjecst required (#70)

[Atul Tulshibagwale]

  Branch: refs/heads/main
  Home:   https://github.com/openid/sharedsignals
  Commit: a7272ae40ad6f31dd3ca02c8416b4ff44e9f6a0e
      https://github.com/openid/sharedsignals/commit/a7272ae40ad6f31dd3ca02c8416b4ff44e9f6a0e
  Author: Atul Tulshibagwale <atul at sgnl.ai>
  Date:   2023-06-27 (Tue, 27 Jun 2023)

  Changed paths:
    M openid-sharedsignals-framework-1_0.html
    M openid-sharedsignals-framework-1_0.md
    M openid-sharedsignals-framework-1_0.txt

  Log Message:
  -----------
  Fixes #60 - are subjecst required (#70)

* Fixes #60 - are subjecst required

* Incorporated Shayne's feedback

* removed special case for single-stream transmitters