doc: module: update file references

Adjust documents to the file moves made by commit cfc1d277 ("module:
Move all into module/").

Thanks to Yanteng Si for helping me to update
Documentation/translations/zh_CN/core-api/kernel-api.rst

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Acked-by: Yanteng Si <siyanteng@loongson.cn>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>