docs(README): remove rocket chat launcher link (#15477)
docs(README): remove rocket chat launcher link (#15477)

The link reference about RocketChatLauncher not work, and can be cause confusing, I think that is better remove
Sing-Li/Rocket.Chat,subesokun/Rocket.Chat,VoiSmart/Rocket.Chat,subesokun/Rocket.Chat,VoiSmart/Rocket.Chat,Sing-Li/Rocket.Chat,Sing-Li/Rocket.Chat,subesokun/Rocket.Chat,Sing-Li/Rocket.Chat,subesokun/Rocket.Chat,VoiSmart/Rocket.Chat