Update README.md

Author: YSGStudyHards

README.md

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 # YyFlight.Core
 基于.NET 5 的快速开发框架，持续开发中......
+
+# 相关技术栈
+* [Elasticsearch](https://www.elastic.co/cn/elasticsearch/https://www.elastic.co/cn/elasticsearch/)
+* [Logstash](https://www.elastic.co/cn/logstash/)
+* [kibana](https://www.elastic.co/cn/kibana/)
+* [EF]()
+* [.NET 5]()
+* [MySql]()
+* [JWT]