update README

Just found out not all platforms standardize on POSIX long flag names,
only short flag names 😡. Much as I would prefer to use long flags for
documentation, it is simply impossible.

README.md

@@ -318,7 +318,7 @@ See [START\_HERE.md](https://github.com/bokwoon95/wgo/blob/main/START_HERE.md).
 
 ```shell
 # macOS/Linux (replace wgo-macos-apple-silicon with wgo-macos | wgo-linux | wgo-linux-arm)
-curl --location --output wgo "$(curl 'https://api.github.com/repos/bokwoon95/wgo/releases/latest' | grep '"browser_download_url": ".*wgo-macos-apple-silicon"' | xargs | cut --delimiter ' ' --fields 2)"
+curl --location --output wgo "$(curl 'https://api.github.com/repos/bokwoon95/wgo/releases/latest' | grep '"browser_download_url": ".*wgo-macos-apple-silicon"' | xargs | cut -d ' ' -f 2)"
 ```
 
 ```powershell