Updated 3perOG.md time reference in exercise #16

	name: Check that docs build
	on:
	pull_request:
	paths:
	- './docs/**.png'
	- './docs/book/content/calibration/images/**.png'
	- './docs/README.md'
	- './docs/book/**.yml'
	- './docs/book/**.bib'
	- '**.md'
	- './docs/book/content/api/**.rst'
	- './ogphl/**.py'

	jobs:
	build:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	persist-credentials: false

	- name: Setup Miniconda
	uses: conda-incubator/setup-miniconda@v3
	with:
	miniforge-variant: Mambaforge
	activate-environment: ogphl-dev
	environment-file: environment.yml
	python-version: "3.11"
	auto-activate-base: false

	- name: Build # Build Jupyter Book
	shell: bash -l {0}
	run: \|
	pip install jupyter-book>=0.11.3
	pip install sphinxcontrib-bibtex>=2.0.0
	pip install -e .
	python -m ipykernel install --user --name=ogphl-dev
	jb build ./docs/book

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