Show full MDX lint error in PR annotation

Author: gontzess

.github/workflows/verify.yaml

@@ -124,10 +124,12 @@ jobs:
         if: steps.check-docs.outputs.has_docs == 'true'
         run: |
           echo "Validating docs/connector.mdx..."
-          if node _workflows/tools/mdx-lint/mdx-lint.mjs < _caller/docs/connector.mdx; then
+          LINT_OUTPUT=$(node _workflows/tools/mdx-lint/mdx-lint.mjs < _caller/docs/connector.mdx 2>&1)
+          if [ $? -eq 0 ]; then
             echo "MDX validation passed"
           else
-            echo "::error file=docs/connector.mdx::MDX validation failed. Check for malformed tags, unclosed components, or unsupported syntax."
+            echo "$LINT_OUTPUT"
+            echo "::error file=docs/connector.mdx::${LINT_OUTPUT}"
             exit 1
           fi