add readmeCreatedManually flag to simulation package.json files with manual readmes, regenerate readmes, https://github.com/phetsims/utterance-queue/issues/5
add readmeCreatedManually flag to simulation package.json files with manual readmes, regenerate readmes, https://github.com/phetsims/utterance-queue/issues/5

phetsims/chipper,phetsims/chipper,phetsims/chipper