Add MINSHENG FinTech to powered-by (#3881)

* Update powered-by.md

update powered-by.md

* Update powered-by.md

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* Update powered-by.md

docs/powered-by.md

@@ -63,6 +63,7 @@ or providing commercial products including Apache SkyWalking.
 1. Mobanker.com 上海前隆信息科技有限公司  http://www.mobanker.com/
 1. Mxnavi. 沈阳美行科技有限公司 http://www.mxnavi.com/
 1. Moji 墨叽（深圳）科技有限公司 https://www.mojivip.com
+1. MINSHENG FinTech 民生科技有限责任公司 http://www.mskj.com/
 1. Mypharma.com 北京融贯电子商务有限公司 https://www.mypharma.com
 1. NetEase 网易 https://www.163.com/
 1. Osacart in WeChat app 广州美克曼尼电子商务有限公司