Simplify install command in README, add English version

Domain arguments dropped from the quick-start command (the installer
prompts for them). English translation lives in README_EN.md, both
files cross-link.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

README.md

@@ -1,5 +1,7 @@
 # 3x-ui-pro
 
+🇬🇧 [English version](README_EN.md)
+
 Автоматическая установка панели [3x-ui](https://github.com/MHSanaei/3x-ui) с nginx, SSL, Clash-подпиской и диагностикой сети.
 
 - Debian 12 / Ubuntu 24
@@ -34,11 +36,9 @@ wget -qO x-ui-latest.sh https://raw.githubusercontent.com/mozaroc/3x-ui-pro/main
 **Шаг 2 — запустить**
 
 ```bash
-bash x-ui-latest.sh -install y -subdomain panel.example.com -reality_domain r.example.com
+bash x-ui-latest.sh -install y
 ```
 
-Замените `panel.example.com` на домен панели, `r.example.com` — на домен для REALITY.
-
 ---
 ## Патч