fix invalid install path

[hidalgopl]

Hey, thanks for working on intellij plugin, it's very useful. It's my first stab at writing Kotlin, so any feedback appreciated! My understanding is that new version of zig has /lib/std/ dir structure (and it was /lib/zig/std in previous version)

fixes #43

I managed to build plugin locally and error is gone for zig v0.10

[ice1000]

I got permission denied pushing to your repo, so I'll just include your commit and my changes together into master.

[ice1000]

I say thank you by merging your PR. :)