Fix windows Scripts path in shell-commands.rst

[caverar]

Just a little fix to the path "C:\Users\UserName.platformio\penv\Scripts\" changing the ";" to "\" so the Windows shell is able to properly open all the scripts inside the folder.

[CLAassistant]

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[ivankravets]

Should it be C:\Users\UserName\.platformio\penv\Scripts\;?

[caverar]

I modified the environment variable Path manually from the Windows UI and it worked only without the ;, something like this: C:\Users\UserName\.platformio\penv\Scripts\, I suppose that the ; was there for modifying the variable from the PowerShell (or just a typo?), but could be a bad idea putting it there because (from what I understood on stackoverflow) seems like there is multiple ways for changing the path variables with and without the ;, and I think the majority of Windows users is going to change the environment variable by the UI anyway.

[ivankravets]

How do you configure multiple directories to the PATH env?

[caverar]

In the Windows UI each env variable is a table, so I just add a new entry.

Anyway seems like there is too many ways to do it, so I think C:\Users\UserName\.platformio\penv\Scripts\ with the \ and without the ; is the more clear way for all the users.

[ivankravets]

Does it work without the \ at the end of the path? C:\Users\UserName\.platformio\penv\Scripts

[caverar]

In Windows 10 only worked for me with the \ at the end.

[ivankravets]

Thanks for the PR!

[caverar]

Thanks to you for Platformio, this sofware is great.