Specify right model card metadata

This PR specifies the right metadata for this repository

README.md

@@ -1,9 +1,11 @@
 ---
 license: other
-license_name: microsoft-research-license
-license_link: https://github.com/microsoft/LLaVA-Med/blob/main/Research%20License.docx
 tags:
 - medical
+- llava
+license_name: microsoft-research-license
+license_link: https://github.com/microsoft/LLaVA-Med/blob/main/Research%20License.docx
+pipeline_tag: image-text-to-text
 ---
 *This model was added by Hugging Face staff.*