fix space

Author: wxiaoguang

custom/conf/app.example.ini

@@ -1400,7 +1400,7 @@ PATH =
 ;; Built-in: loopback (for localhost), private (for LAN/intranet), external (for public hosts on internet), * (for all hosts)
 ;; CIDR list: 1.2.3.0/8, 2001:db8::/32
 ;; Wildcard hosts: *.mydomain.com, 192.168.100.*
-; ALLOWED_HOST_LIST = external
+;ALLOWED_HOST_LIST = external
 ;;
 ;; Allow insecure certification
 ;SKIP_TLS_VERIFY = false