[Elastic Distribution of OpenTelemetry Node.js]: Change current version to 1.2.0

[KOTungseth]

Type of issue

Inaccurate

What documentation page is affected

https://www.elastic.co/docs/release-notes/edot/sdks/node

What happened?

The current version says 9.0+, but the latest version is 1.2.0.

[theletterf]

Blocked until #1637 is done.