anchor.diff:  {
       "query": {
           "template": {
  -            "query": "{ \"match\": { \"text\": \"{{query_string}}\" }}}", <1>
  +            "query": "{ \"match\": { \"text\": \"{{query_string}}\" }}", <1>
               "params" : {
                   "query_string" : "all about search"
               }
  
positive.code: {
      "query": {
          "template": {
              "query": { "match": { "text": "{{query_string}}" }}},
              "params" : {
                  "query_string" : "all about search"
              }
  
negative.code: ------------------------------------------
  PUT /_search/template/my_template
  {
      "template": { "match": { "text": "{{query_string}}" }},
  }
  ------------------------------------------
  
  