Changes

<ol start="2" style="list-style-type: decimal;">

<li><p>When orangepi-build runs for the first time, it will download the cross-compilation toolchain, u-boot and Linux kernel source code. After successfully compiling a Linux image, the files and folders that can be seen in orangepi-build are:</p>

<p>b. '''external''': Contains the configuration files needed to compile the image, scripts with specific functions, and the source code of some programs. The rootfs compressed package cached during the image compilation process is also stored in external</p>

<p>c. '''kernel''': stores the source code of the Linux kernel, and the folder named orange-pi-5.10-rk35xx stores the kernel source code of the legacy branch of the RK3588/RK3588S/RK3566 series development boards. Please do not manually name the folder name of the kernel source code Modify, if modified, the kernel source code will be re-downloaded when the compilation system is running</p>