Add merge tag

You need to put merge tags.
See this discussion https://huggingface.co/spaces/HuggingFaceH4/open_llm_leaderboard/discussions/510 .
It seems like models can be flagged if you don't put merge tag.

README.md

@@ -1,5 +1,8 @@
 ---
 license: mit
+tags:
+- mergekit
+- merge
 ---
 
 # MoMo-70B-lora-1.8.6-DPO based model with gradient slerp