Updated use of "blog" in comments to "site"
Updated use of "blog" in comments to "site"

refs https://github.com/TryGhost/Ghost/commit/fa13ff27984b71220b94516e759f432dfa7c813b

- The "site" is a preferred way to refer to Ghost instance instead of a "blog"

TryGhost/Ghost,TryGhost/Ghost,TryGhost/Ghost