update PP-HelixFold description (#5571)
update PP-HelixFold description (#5571)

* add new models and helix files

* update PP-HelixFold description

Co-authored-by: liushuangqiao <92b01ef88cd1899a86531dfbd6f6228f6f5ad138@beibeiMacBook-Pro.local>
PaddlePaddle/models,PaddlePaddle/models,PaddlePaddle/models