welp, mistake

_data/extra.yml

@@ -1,2 +1,2 @@
 list:
-  footer_bio: based on the dark reader theme
+  footer_bio: pwrd by jekyll, html5 and css3

_data/nav.yml

@@ -1,7 +1,7 @@
 list:
-  - title: ~/
+  - title: "~"
     url: /
   - title: ~/blog
-    url: /blog.html
+    url: /blog/
   - title: ~/doc/about
     url: /about.html