Fix all the old usage of admonition syntax (#107098)

docs/sources/developers/http_api/auth.md

@@ -21,18 +21,18 @@ title: 'Authentication HTTP API '
 
 The Authentication HTTP API is used to manage API keys.
 
-{{% admonition type="note" %}}
+{{< admonition type="note" >}}
 Grafana recommends using service accounts instead of API keys. For more information, refer to [Grafana service account API reference](../serviceaccount/).
-{{% /admonition %}}
+{{< /admonition >}}
 
 > If you are running Grafana Enterprise, for some endpoints you would need to have relevant permissions. Refer to [Role-based access control permissions](../../../administration/roles-and-permissions/access-control/custom-role-actions-scopes/) for more information.
 
 ## List API keys
 
-{{% admonition type="warning" %}}
+{{< admonition type="warning" >}}
 This endpoint is deprecated.
 
-{{% /admonition %}}
+{{< /admonition >}}
 
 `GET /api/auth/keys`
 
@@ -80,10 +80,10 @@ Content-Type: application/json
 
 ```http
 HTTP/1.1 410
-Content-Type: application/json
+Content-Type: application/json
 
 ```
-
+
 ## Delete API Key
 
 {{< admonition type="warning" >}}
@@ -100,11 +100,11 @@ Content-Type: application/json
 
 | Action           | Scope      |
 | ---------------- | ---------- |
-| `apikeys:delete` | apikeys:\* |
+| `apikeys:delete` | apikeys:\* |
 
 **Example Request**:
 
-```http
+```http
 DELETE /api/auth/keys/3 HTTP/1.1
 Accept: application/json
 Content-Type: application/json