design: tweak Code of Conduct proposal (remove 'condoning')
design: tweak Code of Conduct proposal (remove 'condoning')

Update golang/go#13073

Change-Id: Iaa81841da89199556e6192858632f2e0115877f3
Reviewed-on: https://go-review.googlesource.com/17016
Reviewed-by: Andrew Gerrand <395a7d33bec8475c9b83b7d440f141bcbd994aa5@golang.org>

golang/proposal,golang/proposal