Documentation search results shows duplicates

### Page link:

https://bazel.build/versions/6.2.0/rules/lib/rule_attributes?hl=en

### Problem description (include actual vs expected text, if applicable):

Example searching for "rule"

### Where do you see this issue? (include link to specific section of the page, if applicable)

any page

### Any other information you'd like to share?

_No response_

Open the linked Bazel 6.2.0 documentation page and reproduce the duplicate results by searching for "rule". No source file, test, or entry point is identified in the issue, so locate the documentation search implementation first; done means the search no longer shows duplicate results on the affected pages.

Written by the indexing model from the issue text.