fix PoW Reward

Author: y-chan

Diff for: en.html

@@ -259,7 +259,7 @@ <h2 class="l-text_center u-m16">Technical Information</h2>
                         <div class="o-w50per u-border_bottom u-font_bold u-tech_info">Difficulty</div>
                         <div class="o-w50per u-border_bottom u-tech_info">DarkGravityWave3</div>
                         <div class="o-w50per u-border_bottom u-font_bold u-tech_info">Block reward</div>
-                        <div class="o-w50per u-border_bottom u-tech_info">250ZNY<br>(Dec.2017:62.5ZNY)</div>
+                        <div class="o-w50per u-border_bottom u-tech_info">250ZNY<br>(Apr.2019:31.25ZNY)</div>
                         <div class="o-w50per u-border_bottom u-font_bold u-tech_info">Halving</div>
                         <div class="o-w50per u-border_bottom u-tech_info">500,000ZNY</div>
                         <div class="o-w50per u-border_bottom u-font_bold u-tech_info">Port</div>