Fix how docs gets pip version, to work around an issue with readthedocs
Fix how docs gets pip version, to work around an issue with readthedocs

techtonik/pip,rouge8/pip,techtonik/pip,pradyunsg/pip,RonnyPfannschmidt/pip,pypa/pip,pfmoore/pip,rouge8/pip,RonnyPfannschmidt/pip,techtonik/pip,pradyunsg/pip,xavfernandez/pip,pypa/pip,sbidoul/pip,rouge8/pip,xavfernandez/pip,xavfernandez/pip,pfmoore/pip,RonnyPfannschmidt/pip,sbidoul/pip