[DOCS] _index_prefix for highligh matched_fields (#118569) #118580
Merged
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Enhance documenation to explain that "_index_prefix" subfield must be added to
matched_fields
param for highlighting a main field. When doing prefix queries on fields that are indexed with prefixes, "_index_prefix" subfield is used. If we try to highlight the main field, we may not get any results. "_index_prefix" subfield must be added tomatched_fields
which instructs ES to use matches from "_index_prefix" to highlight the main field.Backport for PR #118569