clarify IP tip message

locales/index.d.ts

@@ -13094,7 +13094,7 @@ export interface Locale extends ILocale {
      */
     "ip": string;
     /**
-     * The date is the IP address was first acknowledged.
+     * The date is when IP address was first used.
      */
     "ipTip": string;
     /**

sharkey-locales/en-US.yml

@@ -579,7 +579,7 @@ remoteFollowing: "Remote following"
 updateRemoteUser: "Refresh remote data"
 activityPub: "Activity Pub"
 ip: "IP"
-ipTip: "The date is the IP address was first acknowledged."
+ipTip: "The date is when IP address was first used."
 rolePeriod: "Period"
 roleAssigned: "Assigned"
 roleAutomatic: "automatic"