message: Remove copr from installation instructions
  Since Fedora now provides Alacritty in the default repository, that
  should be used instead of the copr repository.
diff: -# Third Party Repositories
  -
  -For distributions that do not ship Alacritty officially, there are some third
  -party packages available. Only the cargo package is maintained officially, so
  -proceed with caution.
  -
  -## [Fedora](https://copr.fedorainfracloud.org/coprs/pschyska/alacritty)
  -
  -```
  -# dnf copr enable pschyska/alacritty
  -# dnf install alacritty
  -```
  -
  -## Cargo
  +# Cargo Insallation
  If you're just interested in the Alacritty binary and you don't need the
  [terminfo file](#terminfo), [desktop entry](#desktop-entry),
  