Fix generator bug

Author: k1LoW

Rakefile

@@ -14,7 +14,7 @@ namespace :holidays do
     data = YAML.load(URI.open('https://raw.githubusercontent.com/holiday-jp/holiday_jp/master/holidays.yml'))
     data = data.map do |v|
       v[1] = '振替休日' if v[1].match(/振替休日/)
-      v[1] = '国民の休日' if v[1].match(/休日/)
+      v[1] = '国民の休日' if v[1] == '休日'
       v
     end.to_h
     YAML.dump(data, File.open('holidays.yml', 'w'))