hero overlay condition to post.title for pages - fix

vue-theme/src/pages/mixin-post-types.js

             // json.text = post.title
             json.text = post && post.content ? post.content : post.title
             
-            if (post.type === 'page' && post.slug === 'center', 'about', 'board', 'mission', 'staff', 'contact', ) {
+            if (post.type === 'page' && post.slug === 'center', 'about', 'board', 'mission', 'staff', 'contact' ) {
                 json.text = post.title
             }