DOC: update code of conduct URL
DOC: update code of conduct URL

As title.

Closes: #17458

mhvk/numpy,charris/numpy,simongibbons/numpy,pdebuyl/numpy,seberg/numpy,anntzer/numpy,charris/numpy,endolith/numpy,jakirkham/numpy,pdebuyl/numpy,anntzer/numpy,rgommers/numpy,pbrod/numpy,madphysicist/numpy,charris/numpy,anntzer/numpy,rgommers/numpy,madphysicist/numpy,rgommers/numpy,jakirkham/numpy,grlee77/numpy,simongibbons/numpy,seberg/numpy,rgommers/numpy,seberg/numpy,pbrod/numpy,mattip/numpy,mhvk/numpy,grlee77/numpy,numpy/numpy,numpy/numpy,jakirkham/numpy,simongibbons/numpy,pbrod/numpy,madphysicist/numpy,pbrod/numpy,anntzer/numpy,endolith/numpy,endolith/numpy,madphysicist/numpy,charris/numpy,mhvk/numpy,pdebuyl/numpy,mattip/numpy,simongibbons/numpy,grlee77/numpy,mhvk/numpy,simongibbons/numpy,seberg/numpy,pdebuyl/numpy,grlee77/numpy,numpy/numpy,mhvk/numpy,grlee77/numpy,jakirkham/numpy,numpy/numpy,pbrod/numpy,mattip/numpy,mattip/numpy,endolith/numpy,madphysicist/numpy,jakirkham/numpy