trunc_normal_ not in Docs

[lbq8942]

In pytorch's official docs:https://pytorch.org/docs/stable/index.html or https://pytorch.org/docs/1.9.0/,i can not get any results when i search trunc_normal_.

Though i can use nn.init.trunc_normal_() in my code without reporting error,i can not find it's doc to get more information ,why?

cc @brianjo @mruberry @albanD @jbschlosser @walterddr @kshitij12345

[lezcano]

This seems to be the case. We would accept a fix adding this to the corresponding .rst file within the docs/ folder.