fix _id to id

liuxiaolong

2019-07-26 cf1ca37ff975c1b4119be485ad3fd5c1de019ded

 ruleserver/geoPolygon.go

@@ -120,7 +120,7 @@
   perInterPg := areaInter / areaPg // 重合面积占多边形区域的比例
   // 哪个占的比例大按哪个计算
   if perInterBox > perInterPg {
      return perInterBox
      return (perInterBox*100)
   }
   return perInterPg*100
   return (perInterPg*100)
}