Set correct icons for register absence menu item

aleksis/apps/alsijil/menus.py

@@ -112,7 +112,8 @@ MENUS = {
                 {
                     "name": _("Register absence"),
                     "url": "register_absence",
-                    "icon": "rate_review",
+                    "svg_icon": "mdi:message-draw",
+                    "vuetify_icon": "mdi-message-draw",
                     "validators": [
                         (
                             "aleksis.core.util.predicates.permission_validator",