Add scrollTo() back to keep TOC links in view as you scroll, per #25

Author: tannerhodges

src/_includes/scripts/in-page-nav.js

@@ -9,6 +9,7 @@ const observer = new IntersectionObserver(entries => {
         const id = entry.target.getAttribute('id')
         const newActive = document.querySelector(`.pageNav a[href="#${id}"]`);
         newActive.classList.add('is-active');
+        newActive.closest('.toc').scrollTo(0, newActive.offsetTop);
     }
 }, { rootMargin: `0% 0% -90% 0%` }
 );