While running make docs sphinx generates a warning that there are duplicate labels named `_examples`. It seems it's present in `c-api/typeobj.rst` and `distutils/examples.rst` as below : ➜  Doc git:(master) rg '.. _examples:'c-api/typeobj.rst2324:.. _examples:distutils/examples.rst1:.. _examples:# Warning2018-07-10T07:30:36.8709047Z /opt/vsts/work/1/s/Doc/distutils/examples.rst:5: WARNING: duplicate label examples, other instance in /opt/vsts/work/1/s/Doc/c-api/typeobj.rstSample log :https://python.visualstudio.com/cpython/cpython%20Team/_build/results?buildId=16141&view=logsThere are no references to the label as far as I have checked and I suppose this is an easy fix to be done if someone wants to take it up. The effect is that in the pagehttps://docs.python.org/3.8/c-api/typeobj.html the following text links to distutils/examples for the text "Examples" which should ideally link tohttps://docs.python.org/3.8/c-api/typeobj.html#examples"In addition to the following quick reference, the Examples section provides at-a-glance insight into the meaning and use of PyTypeObject."It will be also helpful if sphinx warnings are made as an error in CI so that these are caught there.Thanks

New changeset121eb1694cab14df857ba6abe9839654cada15cf by Julien Palard (Xtreak) in branch 'master':bpo-34081: Fix wrong example link that was linking to distutils (GH-8248)https://github.com/python/cpython/commit/121eb1694cab14df857ba6abe9839654cada15cf