Fix blog icons

docs/_posts/2018-04-14-migration-to-v070.md

@@ -4,7 +4,7 @@ layout: post
 introduction: "What has changed"
 color: "success"
 name: "Migrating to v0.7.0"
-icon: "sync-alt"
+icon: "angle-double-up"
 ---
 
 A new major Bulma update is out: [v0.7.0](#)!

docs/_posts/2018-06-20-automatic-variables-documentation.md

@@ -2,7 +2,7 @@
 title: "Automatic variables documentation"
 layout: post
 introduction: "Keeping the docs in sync"
-color: "info"
+color: "link"
 name: "Automatic variables docs"
 icon: "sync-alt"
 ---