Fix references to extension declarations #1449

	name: "Build"

	on:
	- push
	- pull_request

	jobs:
	build: # Check build on various OSes

	strategy:
	matrix:
	os:
	- macos-latest
	- ubuntu-latest
	# - windows-latest Windows doesn't work yet
	ocaml-compiler:
	# Don't include every versions. OCaml-CI already covers that
	- 4.14.x
	include:
	- os: ubuntu-latest # Enable coverage only on a single build
	send-coverage: true
	fail-fast: false

	runs-on: ${{ matrix.os }}

	steps:
	# Clone the project
	- uses: actions/checkout@v2

	# Setup
	- name: Setup OCaml ${{ matrix.ocaml-version }}
	uses: ocaml/setup-ocaml@v2
	with:
	# Do not pin odoc to not break Mdx installation
	opam-pin: false
	ocaml-compiler: ${{ matrix.ocaml-compiler }}
	opam-local-packages: \|
	odoc.opam

	- name: Install dependencies
	run: opam install -y --deps-only -t ./odoc.opam ./odoc-parser.opam

	- name: Install bisect_ppx
	run: opam install bisect_ppx

	- name: dune runtest
	run: opam exec -- dune runtest

	# Run Mdx tests that are disabled by default.
	- name: Mdx tests
	run: \|
	opam install -y mdx
	opam exec -- dune build @runmdx

	- name: Send coverage stats to Coveralls
	if: matrix.send-coverage == true
	run: \|
	opam exec -- dune runtest --instrument-with bisect_ppx --force
	opam exec -- bisect-ppx-report send-to Coveralls
	env:
	COVERALLS_REPO_TOKEN: ${{ secrets.GITHUB_TOKEN }}
	PULL_REQUEST_NUMBER: ${{ github.event.number }}

Provide feedback