[Doc] Update mws_log_delivery.md to add time_sleep

[LittleWat]

Changes

without this sleep,

I faced the following error:

02:58:20.315 STDERR tofu: │ Error: cannot create mws log delivery: Failed to perform putObject operations on s3Bucket:dbx-dev-logging-audit with deliveryPathPrefix:dbx-dev-logging-audit with the IAM Role:arn:aws:iam::577638361399:role/dbx-dev-logging-audit-delivery-role provided. Please add all required s3 actions as mentioned in API docs to role policy of your IAM Role.
02:58:20.315 STDERR tofu: │ 
02:58:20.315 STDERR tofu: │   with databricks_mws_log_delivery.audit_logs,
02:58:20.315 STDERR tofu: │   on main.tf line 42, in resource "databricks_mws_log_delivery" "audit_logs":
02:58:20.315 STDERR tofu: │   42: resource "databricks_mws_log_delivery" "audit_logs" {

Related issue: https://kb.databricks.com/terraform/failed-credential-validation-checks-error-with-terraform

By adding this time_sleep, I could avoid the error.

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: 4258
• Commit SHA: 5210fe3a206a20fbc70cfd410ca1bff894656c71

Checks will be approved automatically on success.

[eng-dev-ecosystem-bot]

Test Details: go/deco-tests/11949797225