Fix path to markdown configuration file in GitHub Super-Linter setup

Author: taoyangcloud

.azuredevops/pipelines/validation/azure-pipelines-pr-validation.yml

@@ -24,7 +24,7 @@ stages:
               -e VALIDATE_BIOME_FORMAT=false \
               -e IGNORE_GITIGNORED_FILES=true \
               -e GITHUB_ACTIONS_ZIZMOR_CONFIG_FILE=.zizmor.yml \
-              -e MARKDOWN_CONFIG_FILE=.markdownlint.json \
+              -e MARKDOWN_CONFIG_FILE=../../.markdownlint.json \
               -v $(System.DefaultWorkingDirectory):/tmp/lint \
               ghcr.io/super-linter/super-linter:v8.6.0
           displayName: 'GitHub Super-Linter Code Scan'