How do I fix this install prompt for ROS windows?

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Hello, I'm new to this and don't know what I am doing. This is the prompt the installation guide gives. I am in the C disk directory.

@"%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -InputFormat None -ExecutionPolicy Bypass -Command "iex ((New-Object System.Net.WebClient).DownloadString('https://chocolatey.org/install.ps1'))" && SET "PATH=%PATH%;%ALLUSERSPROFILE%\chocolatey\bin"

and the error that follows

ParserError:
Line |
   1 |  @"%SystemRoot%\System32\WindowsPowerShell\v1.0\powershell.exe" -NoPro …
     |    ~
     | No characters are allowed after a here-string header but before the end of the line.