removing form link from other docs

Author: dereklegenzoff

articles/search/search-api-preview.md

@@ -19,7 +19,7 @@ Preview features that transition to general availability are removed from this l
 |Feature                          | Category | Description | Availability  |
 |---------|------------------|-------------|---------------|
 | [**Search REST API 2021-04-30-Preview**](/rest/api/searchservice/index-preview) | Security | Modifies [Create or Update Data Source](/rest/api/searchservice/preview-api/create-or-update-data-source) to support managed identities under Azure Active Directory, for indexers that connect to external data sources. | Public preview, [Search REST API 2021-04-30-Preview](/rest/api/searchservice/index-preview) |
-| [**Azure RBAC support**](search-security-rbac.md) | Security | Use new built-in roles to control access to indexes and indexing, eliminating or reducing the dependency on API keys. | Public preview ([by request](https://aka.ms/azure-cognitive-search/rbac-preview)). After your subscription is on-boarded, use Azure portal or the Management REST API version 2021-04-01-Preview to configure a search service for data plane authentication. |
+| [**Azure RBAC support**](search-security-rbac.md) | Security | Use new built-in roles to control access to indexes and indexing, eliminating or reducing the dependency on API keys. | Public preview ([by request](search-security-rbac#step-1-preview-sign-up)). After your subscription is on-boarded, use Azure portal or the Management REST API version 2021-04-01-Preview to configure a search service for data plane authentication. |
 | [**Management REST API 2021-04-01-Preview**](/rest/api/searchmanagement/) | Security | Modifies [Create or Update Service](/rest/api/searchmanagement/2021-04-01-preview/services/create-or-update) to support new [DataPlaneAuthOptions](/rest/api/searchmanagement/2021-04-01-preview/services/create-or-update#dataplaneauthoptions). | Public preview, [Management REST API ](/rest/api/searchmanagement/), API version 2021-04-01-Preview.|
 | [**Reset Documents**](search-howto-run-reset-indexers.md) | Indexer | Reprocesses individually selected search documents in indexer workloads. | Use the [Reset Documents REST API](/rest/api/searchservice/preview-api/reset-documents), API versions 2021-04-30-Preview or 2020-06-30-Preview. |
 |  [**Power Query connectors**](search-how-to-index-power-query-data-sources.md) | Indexer data source | Indexers can now index from other cloud platforms. If you are using an indexer to crawl external data sources for indexing, you can now use Power Query connectors to connect to Amazon Redshift, Elasticsearch, PostgreSQL, Salesforce Objects, Salesforce Reports, Smartsheet, and Snowflake. | [Sign up](https://aka.ms/azure-cognitive-search/indexer-preview) is required so that support can be enabled for your subscription on the backend. Configure this data source using [Create or Update Data Source](/rest/api/searchservice/preview-api/create-or-update-data-source), API versions 2021-04-30-Preview or 2020-06-30-Preview, or the Azure portal.|

articles/search/whats-new.md

@@ -19,7 +19,7 @@ Learn what's new in the service. Bookmark this page to keep up to date with the
 |Feature                          |  Description | Availability  |
 |------------------------------------|--------------|---------------|
 | [Search REST API 2021-04-30-Preview](/rest/api/searchservice/index-preview) | Adds REST API support for indexer connections made using [managed identities](search-howto-managed-identities-data-sources.md) and Azure Active Directory (Azure AD) authentication. | Public preview |
-| [Role-based authorization (preview)](search-security-rbac.md) | Authenticate using Azure Active Directory and new built-in roles for data plane access to indexes and indexing, eliminating or reducing the dependency on API keys. | Public preview ([by request](https://aka.ms/azure-cognitive-search/rbac-preview)). After your subscription is on-boarded, use Azure portal or the Management REST API version 2021-04-01-Preview to configure a search service for data plane authentication.|
+| [Role-based authorization (preview)](search-security-rbac.md) | Authenticate using Azure Active Directory and new built-in roles for data plane access to indexes and indexing, eliminating or reducing the dependency on API keys. | Public preview ([by request](search-security-rbac#step-1-preview-sign-up)). After your subscription is on-boarded, use Azure portal or the Management REST API version 2021-04-01-Preview to configure a search service for data plane authentication.|
 | [Management REST API 2021-04-01-Preview](/rest/api/searchmanagement/) | Modifies [Create or Update Service](/rest/api/searchmanagement/2021-04-01-preview/services/create-or-update) to support new [DataPlaneAuthOptions](/rest/api/searchmanagement/2021-04-01-preview/services/create-or-update#dataplaneauthoptions). | Public preview |
 
 ## May 2021