GRM-117: fix: fix wiki link URLs, heading hierarchy, quote pip install vars

.gitea/workflows/ci.yml

@@ -30,6 +30,17 @@ jobs:
         run: |
           . .venv/bin/activate
           make pytest-cov
+      - name: Documentation lint check
+        env:
+          PYTHONPATH: src
+          CI_GITEA_TOKEN: ${{ secrets.CI_GITEA_TOKEN }}
+          CI_GITEA_USERNAME: ${{ vars.CI_GITEA_USERNAME }}
+        run: |
+          . .venv/bin/activate
+          pip install --upgrade devx \
+            --index-url "https://${CI_GITEA_USERNAME}:${CI_GITEA_TOKEN}@git.oblachno.oblachno.fyi/api/packages/oblachno-oss/pypi/simple/" \
+            --no-deps
+          python3 -m devx.ci.lint_docs --root .
       - name: Translation completeness check
         run: |
           . .venv/bin/activate