fix: 其它子页面logo显示失败

Author: erich2s

docs/.vuepress/config.js

@@ -15,7 +15,7 @@ module.exports = {
     },
   },
   themeConfig: {
-    logo: 'images/dunwu-logo-100.png',
+    logo: '/images/dunwu-logo-100.png',
     repo: 'dunwu/linux-tutorial',
     repoLabel: 'Github',
     docsDir: 'docs',