nixpkgs/neovim: switch delete buffer to C-k

.config/nixpkgs/neovim/plugins.lua

@@ -19,7 +19,7 @@ require('telescope').setup({
       sort_mru = true,
       mappings = {
         i = {
-          ['<C-d>'] = 'delete_buffer'
+          ['<C-k>'] = 'delete_buffer'
         },
       },
     },