Zach Wang

fix incorrect syntax in l2_normalize Function #919

Incorrect Syntax in l2_normalize Function https://github.com/google-research/scenic/blob/46959b8f2de75f6c1abd2fd7606c60aaf98bcd60/scenic/projects/ncr/loss.py#L70C20-L70C20 `return tensor / jnp.linalg.norm(tensor, axis=axis, keepdims=True + epsilon)` should be `return tensor / (jnp.linalg.norm(tensor, axis=axis, keepdims=True) + epsilon)`