doing our US friends a favOUr

public/language/en_US/notifications.json

@@ -13,7 +13,7 @@
     "upvoted_your_post_in": "<strong>%1</strong> has upvoted your post in <strong>%2</strong>.",
     "moved_your_post": "<strong>%1</strong> has moved your post.",
     "moved_your_topic": "<strong>%1</strong> has moved your topic.",
-    "favourited_your_post_in": "<strong>%1</strong> has favourited your post in <strong>%2</strong>.",
+    "favourited_your_post_in": "<strong>%1</strong> has favorited your post in <strong>%2</strong>.",
     "user_flagged_post_in": "<strong>%1</strong> flagged a post in <strong>%2</strong>",
     "user_posted_to": "<strong>%1</strong> has posted a reply to: <strong>%2</strong>",
     "user_mentioned_you_in": "<strong>%1</strong> mentioned you in <strong>%2</strong>",