Update index.html

offsetWordCountまわりの計算式の不統一を調整

Author: konumatakaki

index.html

@@ -77,13 +77,13 @@ <h2>カスタムモード</h2>
                 currentHours - (startHours + startMinutes / 60);
             let timeProgressRate = elapsedTimeInHours / differenceInHours;
             let needWordCount = Math.round(
-                targetWordCount * timeProgressRate + offsetWordCount
+                (targetWordCount - offsetWordCount) * timeProgressRate + offsetWordCount
             );
             document.getElementById(
                 "wordsToWrite"
             ).innerHTML = `要求文字数: ${needWordCount}字`;
 
-            let wordsPerHour = Math.round((targetWordCount - offsetWordCount) / differenceInHours);
+            let wordsPerHour = Math.round(targetWordCount / differenceInHours);
             document.getElementById(
                 "wordsPerHour"
             ).innerHTML = `時速: ${wordsPerHour}字`;