Update Categories according to XDG specs
Update Categories according to XDG specs

"Application;" as a category has been deprecated (it's too generic). See https://specifications.freedesktop.org/menu-spec/latest/apa.html and then https://specifications.freedesktop.org/menu-spec/latest/apas02.html for a list of registered categories.
ZedTheYeti/Rocket.Chat.Electron,RocketChat/Rocket.Chat.Electron,RocketChat/Rocket.Chat.Electron,ZedTheYeti/Rocket.Chat.Electron,RocketChat/Rocket.Chat.Electron,ZedTheYeti/Rocket.Chat.Electron