AdGeneration: Align first-party data example with OpenRTB spec (id必須, valueは非必須)#4

ss-toshihide-tajima merged 1 commit intomastersupership-jp/prebid.github.io:masterfrom

updateAdGenerationFirstPartyDataExampleIDFieldsupership-jp/prebid.github.io:updateAdGenerationFirstPartyDataExampleIDFieldCopy head branch name to clipboard