Fix metadata to have right library and task

README.md

@@ -2,7 +2,8 @@
 datasets:
 - liuhaotian/LLaVA-Pretrain
 - liuhaotian/LLaVA-Instruct-150K
-pipeline_tag: visual-question-answering
+pipeline_tag: image-text-to-text
+library_name: xtuner
 ---
 
 <div align="center">
@@ -76,4 +77,4 @@ After the evaluation is completed, if it's a development set, it will directly p
     howpublished = {\url{https://github.com/InternLM/xtuner}},
     year={2023}
 }
-```
+```