Use style for text-align in Stats

Author: yasulab

app/views/static_pages/stats.html.haml

@@ -45,7 +45,7 @@
             - @range.each do |year|
               %td{style: 'padding: 0 5px; font-weight: bold;'} #{year}年
             %td{style: 'padding: 0 5px; font-weight: bold;'} 合計
-        %tbody{align: 'center'}
+        %tbody{style: 'text-align: center;'}
           %tr
             %td 道場数
             - @range.each do |year|