fix typo

app/controllers/author.js

@@ -28,7 +28,7 @@ class AuthorController extends SiteController {
       }
       const canAuthor = req.user.permissions.canAuthorPages || req.user.permissions.canAuthorPosts;
       const canPublish = req.user.permissions.canPublishPages || req.user.permissions.canPublishPosts;
-      if (!canAuthor || !canPublish) {
+      if (!canAuthor && !canPublish) {
           return false;
       }
       return true;