update doc (#3049)

README.md

+English | [简体中文](README_cn.md)
+
 # PaddleDetection
 
 The goal of PaddleDetection is to provide easy access to a wide range of object

README_cn.md

+[English](README.md) | 简体中文
+
 # PaddleDetection
 
 PaddleDetection的目的是为工业界和学术界提供大量易使用的目标检测模型。PaddleDetection不仅性能完善，易于部署，同时能够灵活的满足算法研发需求。

docs/GETTING_STARTED.md

@@ -72,7 +72,7 @@ python -u tools/train.py -c configs/faster_rcnn_r50_1x.yml \
 - Dataset will be downloaded automatically and cached in `~/.cache/paddle/dataset` if not be found locally.
 - Pretrained model is downloaded automatically and cached in `~/.cache/paddle/weights`.
 - Model checkpoints are saved in `output` by default (configurable).
-- To check out hyper parameters used, please refer to the config file.
+- To check out hyper parameters used, please refer to the [configs](../configs).
 - RCNN models training on CPU is not supported on PaddlePaddle<=1.5.1 and will be fixed on later version.
 
 

docs/GETTING_STARTED_cn.md

@@ -68,7 +68,7 @@ python -u tools/train.py -c configs/faster_rcnn_r50_1x.yml \
 - 若本地未找到数据集，将自动下载数据集并保存在`~/.cache/paddle/dataset`中。
 - 预训练模型自动下载并保存在`〜/.cache/paddle/weights`中。
 - 模型checkpoints默认保存在`output`中（可配置）。
-- 更多参数配置，请参考配置文件。
+- 更多参数配置，请参考[配置文件](../configs)。
 - RCNN系列模型CPU训练在PaddlePaddle 1.5.1及以下版本暂不支持，将在下个版本修复。