FIX: change deprecated icon name

FIX: change deprecated icon name

diff --git a/assets/javascripts/initializers/add-holiday-flair.js.es6 b/assets/javascripts/initializers/add-holiday-flair.js.es6
index 92037d2..87bb363 100644
--- a/assets/javascripts/initializers/add-holiday-flair.js.es6
+++ b/assets/javascripts/initializers/add-holiday-flair.js.es6
@@ -22,7 +22,7 @@ export default {
           $(el)
             .find(`a.mention[href="/u/${username}"]`)
             .not(".on-holiday")
-            .append(iconHTML("calendar"))
+            .append(iconHTML("calendar-alt"))
             .addClass("on-holiday");
         });
       });

GitHub sha: d4d079db