Add Jiaan Geng to committer list #457

	name: Check document generation

	on:
	push:
	branches:
	- asf-site
	pull_request:
	branches:
	- asf-site

	jobs:
	lint:
	name: check wether all documentation was generated with the right Jekyll version
	runs-on: ubuntu-20.04
	container:
	image: dongjoon/apache-spark-github-action-image:20201025
	steps:
	- name: Checkout Spark Website repository
	uses: actions/checkout@v2
	- name: Install dependencies for documentation generation
	run: \|
	apt-get update -y
	apt-get install -y ruby ruby-dev
	gem install bundler --version 1.17.2
	bundle install
	- name: Run documentation build
	run: \|
	export LC_ALL=C.UTF-8
	export LANG=C.UTF-8
	OLD_IFS=$IFS
	IFS=
	GEN_ERRORS=$(bundle exec jekyll build 3>&2 2>&1 1>&3)
	if [ $(echo $GEN_ERRORS\| grep -v -e '^$'\| grep -c -v "rubygems_integration") -ne 0 ]; then
	echo "Error during document generation:"
	echo $GEN_ERRORS
	exit 1
	fi
	IFS=$OLD_IFS
	CHANGED_FILE=( $(git ls-files --modified --other --exclude-standard --directory \| grep -v sitemap.xml) )
	if [ ${#CHANGED_FILE[@]} -ne 0 ]; then
	echo "Not all documentation was generated and/or not the right Jekyll version was used! Modified / untracked files (excluding sitemap.xml):"
	echo ${CHANGED_FILE[*]}
	echo "Git diff (excluding sitemap.xml):"
	git diff -- . ':(exclude)site/sitemap.xml'
	exit 1
	fi
	shell: /bin/bash {0}

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