Change size from Kb to KB. Fixes #1012

i18n/en.i18n.json

@@ -72,7 +72,7 @@
     "attachmentDeletePopup-title": "Delete Attachment?",
     "attachments": "Attachments",
     "auto-watch": "Automatically watch boards when they are created",
-    "avatar-too-big": "The avatar is too large (70Kb max)",
+    "avatar-too-big": "The avatar is too large (70KB max)",
     "back": "Back",
     "board-change-color": "Change color",
     "board-nb-stars": "%s stars",