Remove preferred wording for npx skills install

Author: jackwener

README.md

@@ -130,7 +130,6 @@ bilibili-cli ships with a [`SKILL.md`](./SKILL.md) that teaches AI agents how to
 ### Claude Code / Antigravity
 
 ```bash
-# Recommended: install the skill directly from GitHub
 npx skills add jackwener/bilibili-cli
 
 # Clone into your project's skills directory
@@ -271,7 +270,6 @@ bilibili-cli 自带 [`SKILL.md`](./SKILL.md)，让 AI Agent 能自动学习并
 ### Claude Code / Antigravity
 
 ```bash
-# 推荐：直接从 GitHub 安装 skill
 npx skills add jackwener/bilibili-cli
 
 # 克隆到项目的 skills 目录