Fix elasticstack_elasticsearch_script docs

Author: k-yomo

docs/resources/elasticsearch_script.md

@@ -19,9 +19,27 @@ provider "elasticstack" {
 
 resource "elasticstack_elasticsearch_script" "my_script" {
   script_id = "my_script"
+  lang      = "painless"
   source    = "Math.log(_score * 2) + params['my_modifier']"
   context   = "score"
 }
+
+resource "elasticstack_elasticsearch_script" "my_search_template" {
+  script_id = "my_search_template"
+  lang      = "mustache"
+  source    = jsonencode({
+    query = {
+      match = {
+        message = "{{query_string}}"
+      }
+    }
+    from = "{{from}}"
+    size = "{{size}}"
+  })
+  params = jsonencode({
+    query_string = "My query string"
+  })
+}
 ```
 
 <!-- schema generated by tfplugindocs -->

examples/resources/elasticstack_elasticsearch_script/resource.tf

@@ -4,6 +4,24 @@ provider "elasticstack" {
 
 resource "elasticstack_elasticsearch_script" "my_script" {
   script_id = "my_script"
+  lang      = "painless"
   source    = "Math.log(_score * 2) + params['my_modifier']"
   context   = "score"
 }
+
+resource "elasticstack_elasticsearch_script" "my_search_template" {
+  script_id = "my_search_template"
+  lang      = "mustache"
+  source    = jsonencode({
+    query = {
+      match = {
+        message = "{{query_string}}"
+      }
+    }
+    from = "{{from}}"
+    size = "{{size}}"
+  })
+  params = jsonencode({
+    query_string = "My query string"
+  })
+}