ElasticSearch correction wording

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This link: https://blog.csdn.net/qq_40990836/article/details/102715538

POST articles/_bulk
{"index":{}}
{"body":"lucene is very cool"}
{"index":{}}
{"body":"Elasticsearch builds on top of lucene"}
{"index":{}}
{"body":"Elasticsearch rocks"}
{"index":{}}
{"body":"elastic is the company behind ELK stack"}
{"index":{}}
{"body":"ELK stack rocks"}
{"index":{}}
{"body":"elasticsearch is rock solid"}

POST /articles/_search
{
  "query": {
    "match": {
      "body": "lucen rock"
    }
  },
  "suggest": {
    "term-suggestion": {
      "text": "lucen rock",
      "term": {
        "suggest_mode" : "popula",
        "field": "body"
      }
    }
  }
}

suggest_mode There are three values: missing context does not only occur term, will not return correct word, the word assessment rate more high Popular recommendation appeared, Always will recommend whether or not there is

POST /articles/_search
{
  "suggest": {
    "my-suggestion": {
      "text": "lucne and elasticsear rock hello world",
      "phrase": {
        "field": "body",
        "max_errors":"2",
        "confidence":2,
        "direct_generator" : [
          {
            "field" : "body",
            "suggest_mode":"always"
          }],
        "highlight":{
          "pre_tag":"<em>",
          "post_tag":"</em>"
        }
      }
    }
  }
}

max_errors: Terms maximum number misspelled, Confidence: Returns the number of restrictions, the default is 1