TE: Add team resources (domains, etc.)

Why is this change being made?

To list our available resources on the Technical Evangelism handbook page.

This resolves https://gitlab.com/gitlab-com/marketing/corporate-marketing/-/issues/2051

How will this merge request impact page speed?

Does this MR meet the acceptance criteria?

Assign to DRI

• Did you assign this change to the correct DRI of the page or information you are changing?

Conformity

• Added description to this MR explaining the reasons for the proposed change, per say-why-not-just-what