Revert "appveyor: stop to use U+30FC KATAKANA-HIRAGANA PROLONGED SOUND MARK"
Revert "appveyor: stop to use U+30FC KATAKANA-HIRAGANA PROLONGED SOUND MARK"

This reverts commit d197ad6339f37fa34fd53453516b18a6dd21907c.

It's meaningless.

kenhys/groonga,groonga/groonga,groonga/groonga,kenhys/groonga,naoa/groonga,kenhys/groonga,komainu8/groonga,groonga/groonga,komainu8/groonga,naoa/groonga,groonga/groonga,komainu8/groonga,groonga/groonga,kenhys/groonga,komainu8/groonga,naoa/groonga,komainu8/groonga,groonga/groonga,naoa/groonga,groonga/groonga,naoa/groonga,naoa/groonga,kenhys/groonga,groonga/groonga,komainu8/groonga,kenhys/groonga,naoa/groonga,komainu8/groonga,naoa/groonga,kenhys/groonga,komainu8/groonga,kenhys/groonga