Fix backlink to tech notes

_layouts/post.html

@@ -4,7 +4,7 @@ layout: default
 
 <div class="project-header">
     <div class="breadcrumb-wrapper">
-        <a href="/blog">All technotes</a>
+        <a href="/notes">All technotes</a>
         <p>//</p>
         <p>{{ page.date | date: "%Y.%m.%d" }}</p>
     </div>