message: docs: fix debian/ubuntu download links
diff: @@ -153,8 +153,13 @@ A `.deb` file is provided on each [stable release](https://github.com/ClementTsa
  (note stable ARM builds are only available for 0.6.8 and later). If you want to install this way, do something like:
  ```bash
  -curl -LO https://github.com/ClementTsang/bottom/releases/download/0.7.1/bottom_0.7.1_amd64.deb
  -sudo dpkg -i bottom_0.7.1_amd64.deb
  +# x86-64
  +curl -LO https://github.com/ClementTsang/bottom/releases/download/0.7.1/bottom_x86_64-unknown-linux-gnu.deb
  +sudo dpkg -i bottom_x86_64-unknown-linux-gnu.deb
  +
  +# ARM64
  +curl -LO https://github.com/ClementTsang/bottom/releases/download/0.7.1/bottom_aarch64-unknown-linux-gnu.deb
  +sudo dpkg -i bottom_aarch64-unknown-linux-gnu.deb
  ```
  ### Snap
  