Update README.md with license information

Hi, I'm Chen, a DevRel specialist from 01.AI.
We have updated our license from yi-license to apache-2.0, and this PR is about the update for your model.
Apache-2.0 enables more free and flexible use and distribution, promoting open collaboration and innovation.
If it looks good to you, you can update other Yi model derivatives now licensed under yi-license to apache-2.0.
Thanks for your understanding and cooperation.

README.md

@@ -1,7 +1,4 @@
 ---
-license: other
-license_name: yi-license
-license_link: https://huggingface.co/01-ai/Yi-34B/blob/main/LICENSE
 language:
 - en
 library_name: transformers
@@ -13,6 +10,7 @@ tags:
 - exllama
 - exllamav2
 - exl2
+license: apache-2.0
 ---
 # RPMerge
 A merge of several Yi 34B models with a singular goal: 40K+ context, instruct-enhanced storytelling.