[Doc] Add a warning that attribute should be used in databricks_permissions for databricks_vector_search_endpoint (#4312)

## Changes
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Resolves #4311

## Tests
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- [ ] `make test` run locally
- [x] relevant change in `docs/` folder
- [ ] covered with integration tests in `internal/acceptance`
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- [ ] using Go SDK

Author: alexott

docs/resources/permissions.md

@@ -643,6 +643,8 @@ resource "databricks_permissions" "ml_serving_usage" {
 
 Valid permission levels for [databricks_vector_search_endpoint](vector_search_endpoint.md) are: `CAN_USE` and `CAN_MANAGE`.
 
+-> You need to use the `endpoint_id` attribute of `databricks_vector_search_endpoint` as value for `vector_search_endpoint_id`, not the `id`!
+
 ```hcl
 resource "databricks_vector_search_endpoint" "this" {
   name          = "vector-search-test"