Mention the rubocop-sequel extension in the docs (#7142)
Mention the rubocop-sequel extension in the docs (#7142)


deivid-rodriguez/rubocop,bbatsov/rubocop,smakagon/rubocop,maxjacobson/rubocop,maxjacobson/rubocop,jfelchner/rubocop,meganemura/rubocop,jmks/rubocop,jfelchner/rubocop,tejasbubane/rubocop,tejasbubane/rubocop,rrosenblum/rubocop,meganemura/rubocop,jmks/rubocop,panthomakos/rubocop,deivid-rodriguez/rubocop,smakagon/rubocop,tejasbubane/rubocop,jfelchner/rubocop,panthomakos/rubocop,bbatsov/rubocop,panthomakos/rubocop,maxjacobson/rubocop,meganemura/rubocop,tdeo/rubocop,jmks/rubocop,tdeo/rubocop,rrosenblum/rubocop,tdeo/rubocop,deivid-rodriguez/rubocop,rrosenblum/rubocop