Changes to Send a broadcast by ID

added the pattern ^([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[1-8][0-9a-fA-F]{3}-[89abAB][0-9a-fA-F]{3}-[0-9a-fA-F]{12}|00000000-0000-0000-0000-000000000000|ffffffff-ffff-ffff-ffff-ffffffffffff)$ to the path request parameter broadcastId

removed the media type application/json for the response with the status 204

added the non-success response with the status 404

added the non-success response with the status 409