update

README.md

@@ -7,4 +7,5 @@
 - [Vara Network 官网](https://vara.network/)
 - [Gear Protocol 白皮书](https://whitepaper.gear.foundation/)
 - [Gear IDEA](https://idea.gear-tech.io/)
-- [ss58 地址转换](https://ss58.org/)
+- [SS58 地址转换](https://ss58.org/)
+- [Gear Node 下载](https://get.gear.rs/)

prerequisites/README.md

@@ -1,3 +1,5 @@
+# 预备资料
+
 熟悉 Gear Wiki 文档结构, 搭建开发环境
 - [Intro to Gear Protocol](https://wiki.gear-tech.io/docs/gear/glossary)
 - [Start building](https://wiki.gear-tech.io/docs/getting-started-in-5-minutes)
@@ -6,6 +8,5 @@
 - [Developing smart contracts](https://wiki.gear-tech.io/docs/developing-contracts/introduction)
 - [Program examples](https://wiki.gear-tech.io/docs/examples/prerequisites)
 
-掌握基本的 Rust 语法, 推荐 The Rust Programming Language 前七章内容
-- https://doc.rust-lang.org/book/
+掌握基本的 Rust 语法, 推荐 [The Rust Programming Language](https://doc.rust-lang.org/book/) 前七章内容