Add remark check in CI

.github/workflows/check.yml

@@ -63,6 +63,38 @@ jobs:
             echo ""
           done < <(find . -name "Dockerfile")
           exit $total_exit_code
+      - name: Remark
+        run: |
+          npm install --global yarn
+
+          yarn add remark-cli \
+            remark-lint-mdash-style \
+            https://github.com/typeable/remark-validate-links#anchors \
+            remark-preset-lint-recommended \
+            remark-lint-no-dead-urls
+
+          total_exit_code=0
+          while IFS= read -r file; do
+              yarn run remark -f \
+                  -u validate-links \
+                  -u remark-lint-mdash-style \
+                  -u remark-lint-final-newline \
+                  -u remark-lint-list-item-bullet-indent \
+                  -u remark-lint-no-blockquote-without-marker \
+                  -u remark-lint-ordered-list-marker-style \
+                  -u remark-lint-no-literal-urls \
+                  -u remark-lint-hard-break-spaces \
+                  -u remark-lint-no-duplicate-definitions \
+                  -u remark-lint-no-heading-content-indent \
+                  -u remark-lint-no-inline-padding \
+                  -u remark-lint-no-shortcut-reference-image \
+                  -u remark-lint-no-shortcut-reference-link \
+                  -u remark-lint-no-undefined-references \
+                  -u remark-lint-no-unused-definitions \
+                  -u remark-lint-no-dead-urls \
+                  $file || total_exit_code=$?
+          done < <(find . -name "*.md" -not -path "*/node_modules/*" -not -path "./.github/*")
+          exit $total_exit_code
       - name: Cargo clippy
         run: |
           SKIP_WASM_BUILD=1 cargo clippy -- -D warnings