Update license metadata to reflect DeepSeek license

Hi,
Thanks for releasing Janus Pro 7B!
It looks like the model is actually licensed under the DeepSeek license, this will update the model metadata to display the license as such.

README.md

@@ -1,5 +1,5 @@
 ---
-license: mit
+license: other
 license_name: deepseek
 license_link: LICENSE
 pipeline_tag: any-to-any