chore(lcof2): upload images

Author: yanglbme

README.md

@@ -28,14 +28,15 @@
       name: 'leetcode',
       logo: '/images/doocs-leetcode.png',
       search: [
-        '/', '/solution/', '/lcof/', '/lcci/', '/basic/'
+        '/', '/solution/', '/lcof/', '/lcof2/', '/lcci/', '/basic/'
       ],
       loadSidebar: 'summary.md',
       auto2top: true,
       subMaxLevel: 2,
       alias: {
         '/lcci/.*/summary.md': '/lcci/summary.md',
         '/lcof/.*/summary.md': '/lcof/summary.md',
+        '/lcof2/.*/summary.md': '/lcof2/summary.md',
         '/solution/.*/summary.md': '/solution/summary.md',
         '/basic/.*/summary.md': '/basic/summary.md'
       },