feat: add rock4d other os tutorial

Author: EESN-W

docs/common/general/_sddisktool.mdx

@@ -53,7 +53,7 @@
   - 找到你的 SD 卡（假设它是磁盘 3），输入：
 
     <NewCodeBlock tip="Host-Windows$" type="host">
-      ``` select disk 1 ```
+      ``` select disk 3 ```
     </NewCodeBlock>
 
     - （如果你的 SD 卡是其他磁盘号，请相应修改 3 为正确的数字。）

docs/rock4/rock4d/other-os/buildroot.md

@@ -27,7 +27,6 @@ sudo ln -s /bin/python2 /bin/python
 
 ## 获取 Rockchip 原始 SDK
 
-- Mega
 - [百度网盘](https://pan.baidu.com/s/1G8xA7AsLqQMqrsurMKBGyA?pwd=u7ac)
 
 ## 解压 SDK

i18n/en/docusaurus-plugin-content-docs/current/common/general/_sddisktool.mdx

@@ -53,7 +53,7 @@
   - Locate your SD card (assuming it is disk 3) and enter:
 
     <NewCodeBlock tip="Host-Windows$" type="host">
-      ``` select disk 1 ```
+      ``` select disk 3 ```
     </NewCodeBlock>
 
     - (If your SD card has a different disk number, change 3 to the correct number accordingly.)

i18n/en/docusaurus-plugin-content-docs/current/rock4/rock4d/other-os/buildroot.md

@@ -27,7 +27,6 @@ sudo ln -s /bin/python2 /bin/python
 
 ## Download Rockchip Original SDK
 
-- Mega
 - [Baidu Netdisk](https://pan.baidu.com/s/1G8xA7AsLqQMqrsurMKBGyA?pwd=u7ac)
 
 ## Extract the SDK