Update markview keyboard shortcut

- Update the keyboard shortcut to imitate Joplin behavior

lua/custom/plugins/init.lua

@@ -19,16 +19,19 @@ return {
     config = function(_, opts)
       require('markview').setup(opts)
 
-            local splitToggle_state = false
+      -- This function imitates the behavior of Joplin when rendering notes
+      local splitToggle_state = 0
       vim.keymap.set('n', '<C-ö>', function()
-                if not splitToggle_state then
-                    -- The split toggle will not work unless markview is disabled in the initial window beforehand
-                    vim.cmd 'Markview disableAll'
+        if splitToggle_state == 0 then
+          vim.cmd 'Markview enableAll'
+          splitToggle_state = 1
+        elseif splitToggle_state == 1 then
           vim.cmd 'Markview splitEnable'
-                    splitToggle_state = true
+          splitToggle_state = 2
         else
           vim.cmd 'Markview splitDisable'
-                    splitToggle_state = false
+          vim.cmd 'Markview disableAll'
+          splitToggle_state = 0
         end
       end, { silent = true, desc = 'Toggle Markview split view' })
     end,