doc: add description about `ordered_type_config` #35

	name: gen-singlue-include

	on:
	push:
	branches:
	- main

	jobs:
	generate:
	runs-on: Ubuntu-22.04
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	- name: Build
	run: \|
	g++-12 -std=c++20 -O2 tools/expand/main.cpp -o expand
	./expand include/toml.hpp > single_include.hpp
	- name: Check diff
	id: check-diff
	continue-on-error: true
	run: \|
	diff single_include.hpp single_include/toml.hpp
	- name: Commit and Push
	if: steps.check-diff.outcome == 'failure'
	run: \|
	mv single_include.hpp single_include/toml.hpp
	git config --global user.name "ToruNiina"
	git config --global user.email "[email protected]"
	git add single_include/toml.hpp
	git commit -m "feat [skip ci]: update single_include"
	git push origin main
	env:
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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