bpo-34081: Fix wrong example link that was linking to distutils (GH-8248)

.azure-pipelines/docs-steps.yml

@@ -12,7 +12,7 @@ steps:
   inputs:
     versionSpec: '>=3.6'
 
-- script: python -m pip install sphinx~=1.6.1 blurb python-docs-theme
+- script: python -m pip install sphinx==1.8.1 blurb python-docs-theme
   displayName: 'Install build dependencies'
 
 - ${{ if ne(parameters.latex, 'true') }}:

Doc/Makefile

@@ -12,7 +12,7 @@ PAPER        =
 SOURCES      =
 DISTVERSION  = $(shell $(PYTHON) tools/extensions/patchlevel.py)
 
-ALLSPHINXOPTS = -b $(BUILDER) -d build/doctrees -D latex_elements.papersize=$(PAPER) \
+ALLSPHINXOPTS = -b $(BUILDER) -d build/doctrees -W -D latex_elements.papersize=$(PAPER) \
                 $(SPHINXOPTS) . build/$(BUILDER) $(SOURCES)
 
 .PHONY: help build html htmlhelp latex text changes linkcheck \

Misc/NEWS.d/next/Build/2018-09-06-07-15-20.bpo-34081.cuSTnH.rst

@@ -0,0 +1 @@
+Make Sphinx warnings as errors in the Docs Makefile.