I installed the latest version of Kali Linux for VirtualBox some days ago. It worked fine until now: I'm used to Windows, so when I wanted to open a terminal in Windows I'd just type "cmd" in the search bar and press enter. I got confused and did this in the Linux VM. I have no idea about what application I opened, the only thing I know is that now my machine looks like a Windows 10 system. The weirdest thing is that it has many "stylistic" elements of Windows, but it still "acts like Kali," in the sense that, for example, the terminal (although the prompt is C:\Users\user> like in Windows), responds to the Kali commands.
How can I fix this?