[done] fix of trans in why_conv (#833)
[done] fix of trans in why_conv (#833)

* [WIP] fix of trans in why_conv

* fix 2
d2l-ai/d2l-zh,mli/gluon-tutorials-zh,mli/gluon-tutorials-zh,mli/gluon-tutorials-zh,mli/gluon-tutorials-zh,d2l-ai/d2l-zh,d2l-ai/d2l-zh