Fix FPM event mechanism poll typo and improve it #4319

	name: check-whitespace

	# Get the repository with all commits to ensure that we can analyze
	# all of the commits contributed via the Pull Request.
	# Process `git log --check` output to extract just the check errors.
	# Exit with failure upon white-space issues.

	on:
	pull_request:
	types: [opened, synchronize]

	permissions:
	contents: read

	jobs:
	check-whitespace:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0

	- run: \|
	git config --global user.name "check-whitespace"
	git config --global user.email "check-whitespace@example.com"
	- run: git checkout ${{github.event.pull_request.base.sha}}
	- run: git merge --squash ${{github.event.pull_request.head.sha}}
	- run: git commit -m "Squashed"
	- run: git log --check HEAD^..HEAD

Provide feedback