feat(markdownlint): install and configure Markdownlint

config/nvim/lua/plugins/render-markdown.lua

@@ -3,7 +3,16 @@
 return {
 	"MeanderingProgrammer/render-markdown.nvim",
 	opts = {
-		file_types = { "markdown", "mdx" },
+		file_types = { "markdown", "mdx", "norg", "rmd", "org" },
+		code = {
+			sign = false,
+			width = "block",
+			right_pad = 1,
+		},
+		heading = {
+			sign = false,
+			icons = {},
+		},
 	},
 	dependencies = { "nvim-treesitter/nvim-treesitter", "echasnovski/mini.nvim" },
 }