logoUrl was in twice

numserver.com.custodian-record.json

@@ -7,7 +7,6 @@
    "version": 1,
    "shared": true,
    "sharedProviderName": true,
-   "logoUrl":"",
    "description":"Configure a NUM custodian record for your domain name to prove that you are an administrator of the domain, for more info see: https://num.uk/modules/4",
    "variableDescription":"The user_hash variable is a SHA-1 hash of an identifier, e.g. email, domain or telephone number. The %user_permissions% variable sets the permissions this user has.",   
    "syncPubKeyDomain":"numserver.com",