Update on Missing Alias Pages in Translation Dashboard for ko

[Zamoca42]

An update is needed for https://github.com/tldr-pages/tldr-maintenance/issues/103. After a manual review, all but 3 of the 129 "missing alias page(s)" items appear to be false positives.

The currently valid missing alias pages are as follows.

• pages.ko/common/npm-list.md
• pages.ko/linux/pacman-r.md
• pages.ko/linux/pacman-s.md