fixed zk

ftplugin/markdown.lua

@@ -1,8 +1,9 @@
 -- Add the key mappings only for Markdown files in a zk notebook.
-if require('zk.util').notebook_root(vim.fn.expand('%:p')) ~= nil then
+-- if require('zk.util').notebook_root(vim.fn.expand('%:p')) ~= nil then
   local function map(...) vim.api.nvim_buf_set_keymap(0, ...) end
   local opts = { noremap = true, silent = false }
 
+  map("n", "<CR>", "<Cmd>lua vim.lsp.buf.definition()<CR>", opts)
   -- Create a new note after asking for its title.
   -- This overrides the global `<leader>zn` mapping to create the note in the same directory as the current buffer.
   vim.keymap.set('n', '<leader>zn', "<Cmd>ZkNew { dir = vim.fn.expand('%:p:h'), title = vim.fn.input('Title: ') }<CR>",
@@ -25,4 +26,4 @@ if require('zk.util').notebook_root(vim.fn.expand('%:p')) ~= nil then
   map('n', 'K', '<Cmd>lua vim.lsp.buf.hover()<CR>', opts)
   -- Open the code actions for a visual selection.
   map('v', '<leader>za', ":'<,'>lua vim.lsp.buf.range_code_action()<CR>", opts)
-end
+-- end