Update scripts lines to work on both Unix and Windows

[jacklul]

This shouldn't break anything.
Tested it in Windows command line and linux subsystem.

Currently on windows command line it doesn't seem to execute:

>composer check-code
> ./vendor/bin/phpcs --standard=phpcs.xml -snp --encoding=utf-8 src/ tests/ --report-width=150
'.' is not recognized as an internal or external command,
operable program or batch file.
Script ./vendor/bin/phpcs --standard=phpcs.xml -snp --encoding=utf-8 src/ tests/ --report-width=150 handling the check-code event returned with error code 1

[noplanman]

@jacklul Have you also tried it without the escaped double-quotes?
Just: "vendor/bin/phpcs ..."

I don't have a Windows machine to test on right now.

[jacklul]

Yep! Doesn't work either!

>composer check-code
> vendor/bin/phpcs --standard=phpcs.xml -snp --encoding=utf-8 src/ tests/ --report-width=150
'vendor' is not recognized as an internal or external command,
operable program or batch file.
Script vendor/bin/phpcs --standard=phpcs.xml -snp --encoding=utf-8 src/ tests/ --report-width=150 handling the check-code event returned with error code 1

[noplanman]

Uff, windows... 😁