Tweak translation (ref: https://github.com/progit/progit2-ja/pull/10#discussion_r21438667)
Tweak translation (ref: https://github.com/progit/progit2-ja/pull/10#discussion_r21438716)
Fix typo (ref: https://github.com/progit/progit2-ja/pull/10#discussion_r21438815)
Fix typo (ref: https://github.com/progit/progit2-ja/pull/10#discussion_r21438828)
Tweak markup (ref: https://github.com/progit/progit2-ja/pull/10#discussion_r21438869)
Fix typo (ref: https://github.com/progit/progit2-ja/pull/10#discussion_r21438880)
Fix typo (ref: https://github.com/progit/progit2-ja/pull/10#discussion_r21438890)
Correct mistranslation (ref: https://github.com/progit/progit2-ja/pull/10#discussion_r21438917)
Fix typo (ref: https://github.com/progit/progit2-ja/pull/10#discussion_r21438931)