客小爽数据库链接字符串修复，字符串写错了

PlateformModels/WebCMSEntities.cs

@@ -268,7 +268,7 @@ namespace MySystem.PlateformModels
         {
             if (!optionsBuilder.IsConfigured)
             {
-                optionsBuilder.UseMySql(Library.ConfigurationManager.AppSettings["SqlConnStr"].ToString(), x => x.ServerVersion("5.7.17-mysql"));
+                optionsBuilder.UseMySql(Library.ConfigurationManager.AppSettings["PlateformSqlConnStr"].ToString(), x => x.ServerVersion("5.7.17-mysql"));
             }
         }