The context field in the structure SearchSuggestionOption（in search.go） should change to be highlight

[luxiao9999]

Please use the following questions as a guideline to help me answer
your issue/question without further inquiry. Thank you.

Which version of Elastic are you using?

[ ] elastic.v7 (for Elasticsearch 7.x)

Please describe the expected behavior

The context field in the structure SearchSuggestionOption（in search.go） should change to be highlight,

Otherwise, the highlight field in es search results cannot be assigned in struct SearchSuggestionOption

Please describe the actual behavior

the highlight field in es search results cannot be assigned to context field in struct SearchSuggestionOption

Any steps to reproduce the behavior?

The context field in the structure SearchSuggestionOption（in search.go） should change to be highlight,