fix: scrollToTop

Author: Simon he

src/scrollToTop.ts

@@ -6,9 +6,9 @@ export function scrollToTop() {
       const t = document.documentElement.scrollTop || document.body.scrollTop
       if (pre === undefined)
         pre = t
-      if (pre + 5 < t || t === 0)
+      if ((pre + 5 < t && t < pre * 8 / 7) || t === 0)
         stop()
-      window.scrollTo(0, pre = t - t / 8)
+      window.scrollTo(0, pre = 7 * t / 8)
     }, 0)
   }
   catch (error: any) {