find, sed, less, ssh-keygen, scp: add Russian translation#21147

vltamanec wants to merge 3 commits intotldr-pages:maintldr-pages/tldr:mainfrom

vltamanec:ru-find-sed-less-ssh-keygen-scpvltamanec/tldr:ru-find-sed-less-ssh-keygen-scpCopy head branch name to clipboard