Extensions warning goes to standard output instead of standard error

[FilipRudy]

Description

When opening CMD while having source <(kyma completion zsh) enabled in .zshrc, errors are displayed in standard output instead of standard error.

Expected result

All errors should be returned through standard error.

Actual result

Currently, errors are being displayed in standard output.

Steps to reproduce

1. Add alias kyma=${your CLI repository path}; source <(kyma completion zsh) lines to your .zshrc
2. Build main.go file in CLI repository.
3. Open CMD.