fix: use correct download link (#184)

Author: Wansmer

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
         shell: bash
         run: |
           mkdir -p /tmp/nvim
-          wget -q https://github.com/neovim/neovim/releases/download/nightly/nvim.appimage -O /tmp/nvim/nvim.appimage
+          wget -q https://github.com/neovim/neovim/releases/download/nightly/nvim-linux-x86_64.appimage -O /tmp/nvim/nvim.appimage
           cd /tmp/nvim
           chmod a+x ./nvim.appimage
           ./nvim.appimage --appimage-extract