docs: README

Author: ryan4yin

README.md

@@ -17,9 +17,9 @@
 > My configuration is becoming more and more complex, and it will be difficult for beginners to
 > read. If you are new to NixOS and want to know how I use NixOS, I would recommend you to take a
 > look at the [ryan4yin/nix-config/releases](https://github.com/ryan4yin/nix-config/releases) first,
-> **checkout to some simpler older versions**, such as
+> **checkout to some simpler older versions, such as
 > [i3-kickstarter](https://github.com/ryan4yin/nix-config/tree/i3-kickstarter), which will be much
-> easier to understand.
+> easier to understand**.
 
 This repository is home to the nix code that builds my systems: