EDU-3149: Updates wording for Volume-based tier pricing (#3071)

* EDU-3149: Updates wording for Volume-based tier pricing

Source of truth Tomas Lorinc

Needs sign-off for wording changes beyond suggested wording

* EDU-3149: Corrects broken Go 1.26+ SDK instructions for API keys

Adds code from reference doc including TLS configuration

* Revert "EDU-3149: Corrects broken Go 1.26+ SDK instructions for API keys"

This reverts commit 5efd049.

* After Tlo 1:1

* Responds to Tlo feedback after full page review

* Rehaul starting 19 September. In progress.

* Continuing working from Google doc

* first pass

* EDU-3149: Responds to TLo feedback

* First round of Vercel feedback