Search on four.htmx.org does not find all keywords

Steps to reproduce:

- Go to https://four.htmx.org
- Click Open search
- Type "newContent" or "settleTasks"
- Getting "No results found" despite this page contains both: https://four.htmx.org/reference/events/htmx-after-settle

Start at the Open search control on https://four.htmx.org and reproduce the failure with “newContent” and “settleTasks”. Compare the search results with the content on https://four.htmx.org/reference/events/htmx-after-settle; done means both keywords return the page instead of “No results found”.

Written by the indexing model from the issue text.