further expand on point 17 to improve understanding of CE and EE

Review App: https://fseifoddini-master-patch-45996.about.gitlab-review.app/handbook/marketing/strategic-marketing/tiers/index.html#tier-messaging

Why is this change being made?

Related to: !74056 (merged)

Per feedback receive from @sytses point 17 is important and hidden in a long list as item 17. This MR expands on the topic and moves the content into its own section.

• "Do use Community Edition, CE, Enterprise Edition and EE to refer to our software distributions. " => Multiple times per month people use CE and EE to refer to tiers or code licenses (MIT vs. proprietary). We need to have a clear section about this, instead of making it item 17 in a long list.

Slack thread: https://gitlab.slack.com/archives/C3MAZRM8W/p1612578586408400?thread_ts=1612306142.312600&cid=C3MAZRM8W

What we did in this MR:

Reorganized the long bulleted list into smaller, more consumable, sections that can be individually linked to. We then updated inbound links to this page to use the new anchors.

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