Use mdformat for markdown formatting (#4244)

* Replace skip footnote with html block

* Remove unnecessary duration columns

* Add mdformat to pyproject

* Start to use mdformat-toc

* Remove table of contents headers

* Fix empty header

* Finally, run mdformat

* Remove doctoc from CI

* Fix issue with eip7732

* Error if linter changes something in CI

.github/workflows/run-tests.yml

@@ -29,20 +29,15 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - name: Setup Node.js
-        uses: actions/setup-node@cdca7365b2dadb8aad0a33bc7601856ffabcc48e # v4.3.0
-        with:
-          node-version: '20'
-          cache: ''
       - name: Setup Python
         uses: actions/setup-python@8d9ed9ac5c53483de85588cdf95a591a75ab9f55 # v5.5.0
         with:
           python-version: '3.12.4'
           cache: ''
-      - name: Install doctoc
-        run: npm install -g doctoc@2.2.0
       - name: Run linter for pyspec
-        run: make lint
+        run: |
+          make lint
+          git diff --exit-code
 
   whitespace:
     runs-on: [self-hosted-ghr-custom, size-l-x64, profile-consensusSpecs]