Aligned the phi symbol in the text (φ) to the symbol used in the plots (ϕ) #46

	name: "Pull Request Preflight Check"

	on:
	pull_request_target:
	branches:
	["main"]
	types:
	["opened", "synchronize", "reopened"]

	jobs:
	test-pr:
	name: "Test if pull request is valid"
	if: ${{ github.event.action != 'closed' }}
	runs-on: ubuntu-22.04
	outputs:
	is_valid: ${{ steps.check-pr.outputs.VALID }}
	permissions:
	pull-requests: write
	steps:
	- name: "Get Invalid Hashes File"
	id: hash
	run: \|
	echo "json<<EOF
	$(curl -sL https://files.carpentries.org/invalid-hashes.json)
	EOF" >> $GITHUB_OUTPUT
	- name: "Check PR"
	id: check-pr
	uses: carpentries/actions/check-valid-pr@main
	with:
	pr: ${{ github.event.number }}
	invalid: ${{ fromJSON(steps.hash.outputs.json)[github.repository] }}
	fail_on_error: true
	- name: "Comment result of validation"
	id: comment-diff
	if: ${{ always() }}
	uses: carpentries/actions/comment-diff@main
	with:
	pr: ${{ github.event.number }}
	body: ${{ steps.check-pr.outputs.MSG }}

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