Readme: Remove Windows from supported OSes, recommend WSL

Resolves #5

README.adoc

@@ -28,11 +28,11 @@ toc::[]
 
 To build and run this project locally you will need:
 
-* Linux system footnote:[It should work on any recent Linux distribution for x86_64, aarch64, or ppc64le architecture.], macOS footnote:[I’m not sure what is the lowest version you need. It should work both on Intel and M1.], or Windows 10+ (x64)
+* Linux system footnote:[It should work on any recent Linux distribution for x86_64, aarch64, or ppc64le architecture.], macOS footnote:[I’m not sure what is the lowest version you need. It should work both on Intel and M1.] or Windows Subsystem for Linux (WSL) footnote:[njs doesn’t support Windows, so integration tests won’t run on Windows out of the box. If you’re stuck with Windows, WSL is the easiest way to go.]
 * https://nodejs.org/en/download/package-manager/[Node.js] 18.12 or newer
 * {npm} (distributed with Node.js) or {yarn}
 
-*NOTE:* You do *not* need Docker or other containerization tool for developing and testing njs scripts! See {nginx-testing} for more information.
+*NOTE:* You do *not* need Docker or other containerization tool for developing and testing njs scripts on Linux and macOS! See {nginx-testing} for more information.
 
 
 == Getting Started