* fix docs(en) bugs;test=document_fix

* update paddle.add docs;test=document_fix

* update paddle.where docs;test=document_fix

* for ci;test=document_fix

* Update manipulation.py

* update paddle.where;test=document_fix
Co-authored-by: NLigoml <39876205+Ligoml@users.noreply.github.com>