Convert case of "mikey179/vfsstream" package
Convert case of "mikey179/vfsstream" package

Package names in Composer should not contain uppercase characters, and
after the version 2.0, it will error.

Signed-off-by: Henrique Moody <3be1622bc44cadc0ae4da5043bd847b230c854e8@gmail.com>

Respect/Validation,Respect/Validation