WD-10438 copy updates

[carkod]

Done

According to Jira task:

• /download/iot/installation-media should redirect to /core/docs/install-on-a-device
• In /download/intel-nuc-desktop point “installation media instructions” in step 2 to /tutorials/install-ubuntu-desktop

QA

• Go to https://ubuntu-com-13942.demos.haus/download/iot/installation-media should redirect to https://ubuntu-com-13942.demos.haus/core/docs/install-on-a-device
• Go to https://ubuntu-com-13942.demos.haus/download/intel-nuc-desktop, find the "Installation media instructions" link, and click on it, it should go to https://ubuntu-com-13942.demos.haus/tutorials/install-ubuntu-desktop

Issue / Card

Fixes https://warthogs.atlassian.net/browse/WD-10438

Help

QA steps - Commit guidelines

[webteam-app]

Demo

Jenkins

demos.haus