fix(links): set preview if whitespace after link selected

Signed-off-by: Max <[email protected]>

src/nodes/Preview.js

@@ -148,7 +148,7 @@ function previewPossible({ selection }) {
 	if (hasOtherContent($from.parent)) {
 		return false
 	}
-	const href = extractHref($from.nodeAfter || $from.nodeBefore)
+	const href = extractHref($from.parent.firstChild)
 	if (!href || href.startsWith('#')) {
 		return false
 	}