fix: conflict keymap for sourcing vim buffer

lua/config/keymaps.lua

@@ -34,7 +34,7 @@ vim.keymap.set("n", "<leader>ng", ":lua require('neogen').generate()<CR>")
 
 -- vim.keymap.set("n", "<leader>mp", "<cmd>MarkdownPreviewToggle<CR>")
 
-vim.keymap.set("n", "<leader><leader>", function()
+vim.keymap.set("n", "<leader>s", function()
     vim.cmd("so")
 end)