test/test-PlainTransport.js: fix typos
test/test-PlainTransport.js: fix typos

versatica/mediasoup,versatica/mediasoup,versatica/mediasoup,versatica/mediasoup,versatica/mediasoup,ibc/MediaSoup,ibc/MediaSoup,versatica/mediasoup,ibc/MediaSoup,versatica/mediasoup,versatica/mediasoup,versatica/mediasoup