Add link to NewOneByteString in docs/new.md#944

SiarheiFedartsou wants to merge 2 commits intonodejs:mainnodejs/nan:mainfrom

SiarheiFedartsou:SiarheiFedartsou-new-mdSiarheiFedartsou/nan:SiarheiFedartsou-new-mdCopy head branch name to clipboard