feat(jupytext.lua): add jupytext setup configuration for markdown style and output extension to .md for better compatibility with markdown files

lua/absolute/after/jupytext.lua

@@ -0,0 +1,8 @@
+local jupytext = require("jupytext")
+
+jupytext.setup({
+	style = "markdown",
+	output_extension = "md", -- Default extension. Don't change unless you know what you are doing
+	force_ft = "markdown", -- Default filetype. Don't change unless you know what you are doing
+	custom_language_formatting = {},
+})