Update docs by running build/sbt generate (unitycatalog#534)

**PR Checklist**

- [x] A description of the changes is added to the description of this
PR.
- [x] If there is a related issue, make sure it is linked to this PR.
- [x] If you've fixed a bug or added code that should be tested, add
tests!
- [x] If you've added or modified a feature, documentation in `docs` is
updated

**Description of changes**

<!-- Please state what you've changed and how it might affect the users.
-->
Only run `build/sbt generate` to update the docs without any other
changes

Signed-off-by: Vikrant Puppala <vikrant.puppala@databricks.com>

api/Apis/GrantsApi.md

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+# GrantsApi
+
+All URIs are relative to *http://localhost:8080/api/2.1/unity-catalog*
+
+| Method | HTTP request | Description |
+|------------- | ------------- | -------------|
+| [**get**](GrantsApi.md#get) | **GET** /permissions/{securable_type}/{full_name} | Get permissions |
+| [**update**](GrantsApi.md#update) | **PATCH** /permissions/{securable_type}/{full_name} | Update a permission |
+
+
+<a name="get"></a>
+# **get**
+> PermissionsList get(securable\_type, full\_name, principal)
+
+Get permissions
+
+    Gets the permissions for a securable. 
+
+### Parameters
+
+|Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **securable\_type** | [**SecurableType**](../Models/.md)| Type of securable. | [default to null] [enum: metastore, catalog, schema, table, function, volume, registered_model] |
+| **full\_name** | **String**| Full name of securable. | [default to null] |
+| **principal** | **String**| If provided, only the permissions for the specified principal (user or group) are returned.  | [optional] [default to null] |
+
+### Return type
+
+[**PermissionsList**](../Models/PermissionsList.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: Not defined
+- **Accept**: application/json
+
+<a name="update"></a>
+# **update**
+> PermissionsList update(securable\_type, full\_name, UpdatePermissions)
+
+Update a permission
+
+    Updates the permissions for a securable. 
+
+### Parameters
+
+|Name | Type | Description  | Notes |
+|------------- | ------------- | ------------- | -------------|
+| **securable\_type** | [**SecurableType**](../Models/.md)| Type of securable. | [default to null] [enum: metastore, catalog, schema, table, function, volume, registered_model] |
+| **full\_name** | **String**| Full name of securable. | [default to null] |
+| **UpdatePermissions** | [**UpdatePermissions**](../Models/UpdatePermissions.md)|  | [optional] |
+
+### Return type
+
+[**PermissionsList**](../Models/PermissionsList.md)
+
+### Authorization
+
+No authorization required
+
+### HTTP request headers
+
+- **Content-Type**: application/json
+- **Accept**: application/json
+

api/Models/PermissionsChange.md

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+# PermissionsChange
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+| **principal** | **String** | The principal whose privileges we are changing. | [default to null] |
+| **add** | [**List**](Privilege.md) | The set of privileges to add. | [default to null] |
+| **remove** | [**List**](Privilege.md) | The set of privileges to remove. | [default to null] |
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+

api/Models/PermissionsList.md

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+# PermissionsList
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+| **privilege\_assignments** | [**List**](PrivilegeAssignment.md) | The privileges assigned to each principal. | [default to null] |
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+

api/Models/PrincipalType.md

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+# PrincipalType
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+

api/Models/Privilege.md

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+# Privilege
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+

api/Models/PrivilegeAssignment.md

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+# PrivilegeAssignment
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+| **principal** | **String** | The principal (user email address or group name). | [default to null] |
+| **privileges** | [**List**](Privilege.md) | The privileges assigned to the principal. | [default to null] |
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+

api/Models/SecurableType.md

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+# SecurableType
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+

api/Models/UpdatePermissions.md

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+# UpdatePermissions
+## Properties
+
+| Name | Type | Description | Notes |
+|------------ | ------------- | ------------- | -------------|
+| **changes** | [**List**](PermissionsChange.md) | Array of permissions change objects. | [default to null] |
+
+[[Back to Model list]](../README.md#documentation-for-models) [[Back to API list]](../README.md#documentation-for-api-endpoints) [[Back to README]](../README.md)
+