fix(typo): use the correct bing name for ai-search. (alibaba#1807)

Signed-off-by: maratrixx <maratrix@163.com>

Author: maratrixx

plugins/wasm-go/extensions/ai-search/README.md

@@ -127,7 +127,7 @@ searchFrom:
   cx: "news-search-id"    # 专门搜索Google News内容的搜索引擎ID 
   serviceName: "google-svc.dns"
   servicePort: 443
-- type: being
+- type: bing
   apiKey: "bing-key"
   serviceName: "bing-svc.dns"
   servicePort: 443
@@ -190,8 +190,8 @@ searchFrom:
 ```yaml
 needReference: true
 referenceFormat: "### 数据来源\n%s"
-searchFrom: 
-- type: being
+searchFrom:
+- type: bing
   apiKey: "your-bing-key"
   serviceName: "search-service.dns"
   servicePort: 8080

plugins/wasm-go/extensions/ai-search/main.go

@@ -138,10 +138,10 @@ func parseConfig(json gjson.Result, config *Config, log wrapper.Log) error {
 	var internetExists, privateExists, arxivExists bool
 	for _, e := range json.Get("searchFrom").Array() {
 		switch e.Get("type").String() {
-		case "being":
+		case "bing":
 			searchEngine, err := bing.NewBingSearch(&e)
 			if err != nil {
-				return fmt.Errorf("being search engine init failed:%s", err)
+				return fmt.Errorf("bing search engine init failed:%s", err)
 			}
 			config.engine = append(config.engine, searchEngine)
 			internetExists = true