Fix typo in oncall chapter #14

	name: Deploy

	"on":
	workflow_dispatch: {}
	push:
	branches: ["master"]

	jobs:
	Build:
	runs-on: ubuntu-latest

	# Ask for a token with the right permissions to publish. It would be slightly
	# safer to split into two jobs, so the untrusted mdBook binary does not have
	# access to the token, but the worst you can do is deface the webpage which
	# a malicious mdBook could do anyway, so we keep the workflow simple.
	permissions:
	contents: read
	pages: write
	id-token: write

	steps:
	- uses: actions/checkout@v4

	- name: Install mdBook
	run: \|
	curl -sSL "https://github.com/rust-lang/mdBook/releases/download/$(cat mdbook-version)/mdbook-$(cat mdbook-version)-x86_64-unknown-linux-gnu.tar.gz" \| tar -xz

	- name: Build and test the book
	run: \|
	./mdbook build
	./mdbook test

	# Delete large artifacts from the output. It's 2024, everybody supports woff2.
	rm -f book/FontAwesome/fonts/fontawesome{-webfont.svg,-webfont.ttf,-webfont.eot,.ttf}

	- name: Upload artifact
	uses: actions/[email protected]
	with:
	path: "book"

	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/[email protected]

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