Warnings building documentation #25172
Description
Describe the doc issue
See https://pullrequest.opencv.org/buildbot/builders/precommit_docs/builds/106306/steps/make%20doxygen. Basically the Docs build is failing.
/build/precommit_docs/4.x/opencv/modules/gapi/doc/20-kernel-api.markdown:39: warning: ignoring \dot command because HAVE_DOT is not set
/build/precommit_docs/4.x/opencv/doc/tutorials/gapi/face_beautification/face_beautification.markdown:109: warning: ignoring \dot command because HAVE_DOT is not set
/build/precommit_docs/4.x/opencv/doc/tutorials/gapi/interactive_face_detection/interactive_face_detection.markdown:117: warning: ignoring \dot command because HAVE_DOT is not set
Fix suggestion
No response