[pkg] Close file handler ONLY if we are writing into file #41

	name: Test
	on: [push]
	jobs:
	tests:
	name: Automated tests
	runs-on: ubuntu-22.04
	strategy:
	fail-fast: false
	steps:
	- uses: actions/checkout@v3
	- uses: actions/setup-go@v3
	with:
	go-version: '1.21'
	- uses: actions/cache@v3
	with:
	path: \|
	~/.cache/go-build
	~/go/pkg/mod
	key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
	restore-keys: \|
	${{ runner.os }}-go-
	- name: Run tests
	run: go test ./... -v
	- name: Compile binary
	run: go build go2md.go
	- name: Run recursive go2md
	run: ./go2md --recursive --output README.md

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