Fix duplicate level for `trajectory-similarity` level #641

	name: mda_gh_ci_tests
	on:
	push:
	branches:
	- develop
	pull_request:
	branches:
	- develop
	schedule:
	# 3 am Tuesdays and Fridays
	- cron: "0 3 * * 2,5"

	concurrency:
	# Probably overly cautious group naming.
	# Commits to develop will cancel each other, but PRs will only cancel
	# commits within the same PR
	group: "${{ github.ref }}-${{ github.head_ref }}-${{ github.workflow }}"
	cancel-in-progress: true

	defaults:
	run:
	shell: bash -l {0}

	jobs:
	tests:
	runs-on: ubuntu-latest
	name: "examples-tests"

	steps:
	- uses: actions/checkout@v3

	- name: Get current date
	id: date
	run: echo "date=$(date +%Y-%m-%d)" >> "${GITHUB_OUTPUT}"

	- name: setup micromamba
	uses: mamba-org/setup-micromamba@v1
	with:
	environment-file: environment.yml
	environment-name: mda-user-guide
	cache-environment: true
	cache-downloads: true
	cache-environment-key: environment-${{ steps.date.outputs.date }}
	cache-downloads-key: downloads-${{ steps.date.outputs.date }}
	create-args: >-
	hole2

	- name: "environment information"
	run: \|
	micromamba info
	micromamba list

	- name: "test snapshots"
	working-directory: doc/source/scripts/
	run: python -m pytest

	- name: "test notebooks"
	working-directory: tests/
	run: python -m pytest

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