Correct RustTest keybinding

lua/keybindings.lua

@@ -85,6 +85,7 @@ local on_attach = function(client, bufnr)
 end
 
 -- Code actions
-map('n', '<leader>t', '<cmd>CargoTest<CR>', options) -- Run test under cursor
+-- TODO: Generalize to LSP or only attach on Rust buffers
+map('n', '<leader>t', '<cmd>RustTest<CR>', options) -- Run test under cursor
 
 return { on_attach = on_attach }