[Doc] Update description of `group_id` in `databricks_mws_ncc_private_endpoint_rule`

[alexott]

Changes

NCC now supports connections to any Azure service that supports private link. So update docs to point to corresponding documentation.

Tests

• [ ] make test run locally
• [x] relevant change in docs/ folder
• [ ] covered with integration tests in internal/acceptance
• [ ] relevant acceptance tests are passing
• [ ] using Go SDK

[github-actions[bot]]

If integration tests don't run automatically, an authorized user can run them manually by following the instructions below:

Trigger: go/deco-tests-run/terraform

Inputs:

• PR number: 4238
• Commit SHA: a17569a2a615c815c6d87cd705e3b3ab928c694c

Checks will be approved automatically on success.

[eng-dev-ecosystem-bot]

Test Details: go/deco-tests/11869669870