Fix minor issues

blog/content/first-edition/posts/08-kernel-heap/index.md

@@ -4,8 +4,9 @@ weight = 8
 path = "kernel-heap"
 aliases = ["kernel-heap.html"]
 date  = 2016-04-11
-updated = "2017-11-19"
 template = "first-edition/page.html"
+[extra]
+updated = "2017-11-19"
 +++
 
 In the previous posts we created a [frame allocator] and a [page table module]. Now we are ready to create a kernel heap and a memory allocator. Thus, we will unlock `Box`, `Vec`, `BTreeMap`, and the rest of the [alloc] crate.

blog/templates/second-edition/index.html

@@ -78,7 +78,7 @@
 {% block after_main %}
 <aside class="page-aside-right">
     <div class="block hidden" id="language-selector">
-        <h2>Language</h2>
+        <h2>Languages</h2>
         <ul>
             <li><a href="/">English (Original)</a></li>
             {% for lang in config.languages %}