From this link:
http://embeddedguruji.blogspot.com/2018/11/oe-depends-dot-in-yocto.html
It says
To use oe-depends-dot utility you need to first generate recipe-depends.dot file
When I run in zeus branch of Poky, I don't get recipe-depends.dot file
$ bitbake -g core-image-minimal
It only creates pn-buildlist, task-depends.dot
Can we pass 'task-depends.dot' to oe-depends-dot tool?
Generation of recipe-depends.dot has been removed in Bitbake version 1.43.2 (and newer), see commit 4c484cc01e3eee7ab2ab0359fd680b4dbd31dc30. This affects Yocto versions 3.0 and up.
It appears that the documentation had not been updated right away. However, the latest Bitbake documentation does not include references to the file anymore.