Update README.zh-Hans.md to v1.20

[xlucn]

Also fixed some issues in previous translation.

[rom1v]

Thank you, merged: 57fb08e

I applied these additional changes:

diff --git a/README.md b/README.md
index c9080861..8d80cb1f 100644
--- a/README.md
+++ b/README.md
@@ -955,7 +955,7 @@ This README is available in other languages:
 - [한국어 (Korean, `ko`) - v1.11](README.ko.md)
 - [Português Brasileiro (Brazilian Portuguese, `pt-BR`) - v1.19](README.pt-br.md)
 - [Español (Spanish, `sp`) - v1.17](README.sp.md)
-- [简体中文 (Simplified Chinese, `zh-Hans`) - v1.17](README.zh-Hans.md)
+- [简体中文 (Simplified Chinese, `zh-Hans`) - v1.20](README.zh-Hans.md)
 - [繁體中文 (Traditional Chinese, `zh-Hant`) - v1.15](README.zh-Hant.md)
 - [Turkish (Turkish, `tr`) - v1.18](README.tr.md)
 
diff --git a/README.zh-Hans.md b/README.zh-Hans.md
index f18e8c85..b96d6d5a 100644
--- a/README.zh-Hans.md
+++ b/README.zh-Hans.md
@@ -102,10 +102,7 @@ apt install scrcpy
 
 在 Windows 上，为简便起见，我们提供包含了所有依赖 (包括 `adb`) 的预编译包。
 
- - [`scrcpy-win64-v1.20.zip`][direct-win64]  
-   _(SHA-256: 548532b616288bcaeceff6881ad5e6f0928e5ae2b48c380385f03627401cfdba)_
-
-[direct-win64]: https://github.com/Genymobile/scrcpy/releases/download/v1.20/scrcpy-win64-v1.20.zip
+ - [README](README.md#windows)
 
 也可以使用 [Chocolatey]：
 
@@ -226,10 +223,10 @@ scrcpy --crop 1224:1440:0:0   # 以 (0,0) 为原点的 1224x1440 像素
 
 ```bash
 scrcpy --lock-video-orientation     # 初始（目前）方向
-scrcpy --lock-video-orientation 0   # 自然方向
-scrcpy --lock-video-orientation 1   # 逆时针旋转 90°
-scrcpy --lock-video-orientation 2   # 180°
-scrcpy --lock-video-orientation 3   # 顺时针旋转 90°
+scrcpy --lock-video-orientation=0   # 自然方向
+scrcpy --lock-video-orientation=1   # 逆时针旋转 90°
+scrcpy --lock-video-orientation=2   # 180°
+scrcpy --lock-video-orientation=3   # 顺时针旋转 90°
 ```
 
 只影响录制的方向。
@@ -829,8 +826,6 @@ ADB=/path/to/adb scrcpy
 
 请查看 [BUILD]。
 
-[BUILD]: BUILD.md
-
 
 ## 常见问题