Remove MARKDOWN_CONFIG_FILE

Author: kelvins

.github/workflows/lint-checker.yml

@@ -14,7 +14,6 @@ jobs:
         uses: super-linter/[email protected]
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          MARKDOWN_CONFIG_FILE: .markdownlint.json
           VALIDATE_GO: true
           VALIDATE_RUBY: true
           VALIDATE_JSON: true