transformers

a3c37825 - Make the attention_head_size in distilbert an object attribute (#20970)

Make the attention_head_size in distilbert an object attribute (#20970) * [Fix] Make the attention head size in distilbert an object attribute * Fix code style Co-authored-by: Felix Joehnk <fjoehnk@N73GCH2NDH.corp.proofpoint.com>