doc: fix CHANGELOG_ARCHIVE table of contents

Author: aduh95

doc/changelogs/CHANGELOG_ARCHIVE.md

@@ -73,6 +73,7 @@
 <a href="#0.8.3">0.8.3</a><br/>
 <a href="#0.8.2">0.8.2</a><br/>
 <a href="#0.8.1">0.8.1</a><br/>
+<a href="#0.8.0">0.8.0</a><br/>
 </td>
 <td valign="top">
 <a href="#0.7.12">0.7.12</a><br/>