fix: set search_analyzer for n-grams to standard

* simple analyzer doesn't work with numbers, making auto suggestions
fail for use-cases that rely on a combination of letters and numbers
(e.g. serial numbers)

Author: siddharthlatest

util/es_template.go

@@ -94,7 +94,7 @@ func SetDefaultIndexTemplate() error {
 						"autosuggest": {
 							"type": "text",
 							"analyzer": "autosuggest_analyzer",
-							"search_analyzer": "simple"
+							"search_analyzer": "standard"
 						},
 						"keyword": {
 							"type": "keyword",
@@ -103,7 +103,7 @@ func SetDefaultIndexTemplate() error {
 						"search": {
 							"type": "text",
 							"analyzer": "ngram_analyzer",
-							"search_analyzer": "simple"
+							"search_analyzer": "standard"
 						},
 						"synonyms": {
 							"type": "text",