Add information about supported to platforms to README requirements

Dependencies

• [2] NL47PGQC Update README
• [*] NCBEWRYE Initialize Repository

Change contents

• edit in README.md at line 23
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  + The primary development environment for the extension is WSL2 and at this early stage I can't guarantee that it will work on other platforms.

  + If you are using or have tried using the extension on a different platform, please feel free to open a discussion with any issues you have encountered.