Decrease the number of shards

Elastic Stack Elasticsearch
5

I'm somewhere here:

curl -XGET 'localhost:9200/_template/logstash?pretty'
{
  "logstash" : {
"order" : 0,
"template" : "logstash-*",
"settings" : {
  "index" : {
    "number_of_shards" : "2"
  }
},
"mappings" : { },
"aliases" : { }
  }
}

But my indices:

curl -XGET 'localhost:9200/smsc-*/_settings?pretty'

  "smsc-2017.05.01" : {
    "settings" : {
      "index" : {
        "creation_date" : "1495180973719",
        "number_of_shards" : "5",
        "number_of_replicas" : "1",
        "uuid" : "67XydLUlQkqlm1KhxBFFrg",
        "version" : {
          "created" : "5040099"
        },
        "provided_name" : "smsc-2017.05.01"
      }
    }
  }

So it didn't have any effect. Or is it cause provided name is different?

Thank you!