fix cache bust

Author: nicolaskruchten

.circleci/config.yml

@@ -62,7 +62,7 @@ jobs:
             python check-or-enforce-order.py _posts/r/
             python check-or-enforce-order.py _posts/matlab
             python check-or-enforce-order.py _posts/plotly_js
-            echo `md5 -q all_static/css/main.css` " ../all_static/css/main.css" > _data/cache_bust_css.yml
+            echo `md5 -q all_static/css/main.css` > _data/cache_bust_css.yml
             bundle exec jekyll build
             rm _data/mapbox_token.yml
             mkdir snapshots