[DOC] Default Model Id for Neural Sparse Search Query clause

[zhichao-aws]

What do you want to do?

• Request a change to existing documentation
• Add new documentation
• Report a technical problem with the documentation
• Other

Tell us about your request. Provide a summary of the request and all versions that are affected.

In 2.11 release, we introduce neural_query_enricher to support default model id in neural search (ref). In 2.13 release, we enhance the neural_query_enricher to enable it to support neural sparse query, too. (PR link). The API invokation works same as the neural query.

Now we want to change existing documentation to inform users about this feature. We can modify the description of neural_query_enricher in search-processors.md and neural-query-enricher.md to add neural sparse search. We can also add a section "## Setting a default model on an index or field" in neural-sparse-search.md like the doc for semantic search (ref).

What other resources are available? Provide links to related issues, POCs, steps for testing, etc.
related issues&PR:
#5060
opensearch-project/neural-search#614
#5121

[hdhalter]

Thanks, @zhichao-aws ! Will you be writing the doc PR for this?

[zhichao-aws]

Thanks, @zhichao-aws ! Will you be writing the doc PR for this?

Sure, I'll create a PR for this.

[hdhalter]

HI @zhichao-aws - do you have a doc PR for this?

[zhichao-aws]

HI @zhichao-aws - do you have a doc PR for this?

Will create one today

[zhichao-aws]

PR created: #6725