Update VirtualBox guide
requested to merge Tino.Lippold-ext/apertis-website:wip/tinolippold/update_virtualbox_guide into master
Fix 2 typos related to hyphens. Add a note to configure the network proxy in advance if required. This is only valid for Apertis pro but this page will be taken over on Apertis pro side. Correct the installation steps for VSCodium.
Signed-off-by: Tino Lippold Tino.Lippold@de.bosch.com