Describe the bug
The example on https://opensearch.org/docs/search-plugins/ppl/index/ is not working.

To Reproduce

1. Go to the website https://opensearch.org/docs/search-plugins/ppl/index/
2. Copy and paste the code in de Quick Start section to create the accounts index on your cluster
3. In your cluster go to de Query Workbench, select PPL in de right corner
4. Execute the PPL query that is suggested on https://opensearch.org/docs/search-plugins/ppl/index/

Expected behavior
Query result.

Plugins
Opensearch distro 7.10

Screenshots

Host/Environment (please complete the following information):

• OS: AWS Elasticsearch
• Version 7.10