Readme.md

 * For Ubuntu 18.04LTS v4.15, read [Readme](Readme).
 * For Fedora, users can refer to [T490 SD card reader -- Linux driver](https://www.reddit.com/r/thinkpad/comments/bwk8xq/t490_sd_card_reader_linux_driver/).
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-## build kernel module on Arch Linux
+## build kernel modules on Arch Linux
 * refers to [ArchLinux Kernel Wiki](https://wiki.archlinux.org/index.php/Kernel#Compilation)
 * refers to [ArchLinux Kernel Module Wiki](https://wiki.archlinux.org/index.php/Kernel_module)
 * refers to [ArchLinux Compile Kernel Module Wiki](https://wiki.archlinux.org/index.php/Compile_kernel_module)