tmux: fix undercurls in neovim

stow/.config/nvim/lua/nico/init.lua

@@ -1,4 +1,3 @@
 require("nico.opts")
 require("nico.bind")
-require("nico.txt.init")
 require("nico.lazy_init")

stow/.config/nvim/lua/nico/lazy/headlines.lua

@@ -0,0 +1,5 @@
+return {
+  "lukas-reineke/headlines.nvim",
+  dependencies = "nvim-treesitter/nvim-treesitter",
+  config = true
+}