Update README.md with license information (#3)

- Update README.md with license information (6af8e63f258db7a8cd16e1205aa21c282d45541a)


Co-authored-by: Chen Chongyu <[email protected]>

README.md

@@ -1,5 +1,5 @@
 ---
-license: apache-2.0
+license: llama2
 ---
 ---
 license: gemma