fix links in README

Author: ParisZhang11

examples/post_training_llava/README.md

@@ -22,7 +22,7 @@ source .venv/bin/activate
 
 Please update the fields `annotation_path` and `media_path` in `configs/sft.toml` to your custom dataset. `media_path` can be left as empty (`""`) if the paths in your annotation are absolute paths.
 
-Here is one example of downloading the [Llava-Instruct-150K] (https://huggingface.co/datasets/liuhaotian/LLaVA-Instruct-150K) dataset and [COCO] (https://cocodataset.org/#home) images:
+Here is one example of downloading the [Llava-Instruct-150K](https://huggingface.co/datasets/liuhaotian/LLaVA-Instruct-150K) dataset and [COCO](https://cocodataset.org/#home) images:
 
 ```shell
 mkdir data && mkdir data/sft