fixup! Improve error reporting on config migration

Author: stefanhaller

pkg/config/app_config.go

@@ -249,7 +249,7 @@ func migrateUserConfig(path string, content []byte) ([]byte, error) {
 		if err := os.WriteFile(path, changedContent, 0o644); err != nil {
 			return nil, fmt.Errorf("While attempting to write back fixed user config to %s, an error occured: %s", path, err)
 		}
-		fmt.Println("success. New config written to %s", path)
+		fmt.Printf("success. New config written to %s", path)
 		return changedContent, nil
 	}