修复 promotion dev 环境配置错误的 db

promotion-service-project/promotion-service-app/src/main/resources/application-dev.yaml

 spring:
   # 数据源配置项
   datasource:
-    url: jdbc:mysql://400-infra.server.iocoder.cn:3306/mall_promotionr?useSSL=false&useUnicode=true&characterEncoding=UTF-8
+    url: jdbc:mysql://400-infra.server.iocoder.cn:3306/mall_promotion?useSSL=false&useUnicode=true&characterEncoding=UTF-8
     driver-class-name: com.mysql.jdbc.Driver
     username: root
     password: 3WLiVUBEwTbvAfsh