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update docs/geo-distance.md.

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@ -5,7 +5,11 @@ GeoDistance:直译为地理距离,实际上就是以给定的点为圆心,给定
API:
```java
geoDistance(R column, Double distance, DistanceUnit distanceUnit, GeoPoint centralGeoPoint)
// 查圆形内的所有点
geoDistance(R column, Double distance, DistanceUnit distanceUnit, GeoPoint centralGeoPoint);
// 查不在圆形内的所有点 (0.9.7+ 版本支持)
notInGeoDistance(R column, Double distance, DistanceUnit distanceUnit, GeoPoint centralGeoPoint);
```
使用示例:
```java
@ -15,6 +19,10 @@ geoDistance(R column, Double distance, DistanceUnit distanceUnit, GeoPoint centr
LambdaEsQueryWrapper<Document> wrapper = new LambdaEsQueryWrapper<>();
// 其中单位可以省略,默认为km
wrapper.geoDistance(Document::getLocation, 168.8, DistanceUnit.KILOMETERS, new GeoPoint(41.0, 116.0));
//查询不在圆形内的所有点
// wrapper.notInGeoDistance(Document::getLocation, 168.8, DistanceUnit.KILOMETERS, new GeoPoint(41.0, 116.0));
// 上面语法也可以写成下面这几种形式,效果是一样的,兼容不同用户习惯而已:
// wrapper.geoDistance(Document::getLocation,"1.5km",new GeoPoint(41.0,115.0));
// wrapper.geoDistance(Document::getLocation, "1.5km", "41.0,115.0");