Update Import-Section of Readme

[TBARK01]

The Import-Section of the Readme.md should correspondent to the Alacritty-Documentation

    [general]
   import = [
      # uncomment the flavour you want below:
      "~/.config/alacritty/catppuccin-latte.toml"
      # "~/.config/alacritty/catppuccin-frappe.toml"
      # "~/.config/alacritty/catppuccin-macchiato.toml"
      # "~/.config/alacritty/catppuccin-mocha.toml"
    ]
    ```