Update README with up-to-date platform requirements

Co-authored-by: Emil Engler <me@emilengler.com>
Closes #8157

README.md

@@ -18,10 +18,8 @@ To learn more, visit [ohmyz.sh](https://ohmyz.sh) and follow [@ohmyzsh](https://
 
 ### Prerequisites
 
-__Disclaimer:__ _Oh My Zsh works best on macOS and Linux._
-
-* Unix-like operating system (macOS or Linux)
-* [Zsh](https://www.zsh.org) should be installed (v4.3.9 or more recent). If not pre-installed (`zsh --version` to confirm), check the following instruction here: [Installing ZSH](https://github.com/robbyrussell/oh-my-zsh/wiki/Installing-ZSH)
+* A Unix-like operating system: macOS, Linux, BSD. On Windows: WSL is preferred, but cygwin or msys also mostly work.
+* [Zsh](https://www.zsh.org) should be installed (v4.3.9 or more recent). If not pre-installed (run `zsh --version` to confirm), check the following instructions here: [Installing ZSH](https://github.com/robbyrussell/oh-my-zsh/wiki/Installing-ZSH)
 * `curl` or `wget` should be installed
 * `git` should be installed