Bump rexml from 3.3.6 to 3.3.9 #798

	name: reviewdog
	on: [pull_request]
	jobs:
	remark-lint:
	name: runner / remark-lint
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v1
	with:
	fetch-depth: 0
	- name: Run remark-lint with reviewdog for documentation projects.
	uses: ./lint
	with:
	github_token: ${{ secrets.GITHUB_TOKEN }}

Provide feedback