remove broken link, fix absolute link, update timestamp in frontmatter

- fix automated build warnings
- update timestamp in doc frontmatter

Author: andrewconnell

docs/spfx/use-aad-tutorial.md

@@ -1,7 +1,7 @@
 ---
 title: Consume the Microsoft Graph in the SharePoint Framework
 description: Tutorial on using the AadHttpClient or MSGraphClient class to connect to the Microsoft Graph in SharePoint Framework solutions.
-ms.date: 06/13/2022
+ms.date: 01/06/2023
 ms.localizationpriority: high
 ---
 
@@ -14,7 +14,7 @@ Introduced in v1.4.1, you can use the SharePoint Framework to consume Microsoft
 In this article, you'll learn how to create a SharePoint Framework solution that uses the Microsoft Graph API with a custom set of permissions. For a conceptual overview of this technology, see [Connect to Azure AD-secured APIs in SharePoint Framework solutions](use-aadhttpclient.md).
 
 > [!IMPORTANT]
-> You can consume the Microsoft Graph API with versions of SharePoint Framework earlier than v1.4.1, either via the native **GraphHttpClient**, or by directly using [Microsoft identity platfomr authentication libraries](https://learn.microsoft.com/en-us/azure/active-directory/develop/reference-v2-libraries) implicit OAuth flow. However, the former approach is bound to a predefined set of permissions, which presents some limitations, and the latter is complex from a development perspective. For details about how to implement an implicit OAuth flow, see [Connect to APIs secured with Azure Active Directory](./web-parts/guidance/connect-to-api-secured-with-aad.md).
+> You can consume the Microsoft Graph API with versions of SharePoint Framework earlier than v1.4.1, either via the native **GraphHttpClient**, or by directly using [Microsoft identity platfomr authentication libraries](/azure/active-directory/develop/reference-v2-libraries) implicit OAuth flow. However, the former approach is bound to a predefined set of permissions, which presents some limitations, and the latter is complex from a development perspective.
 
 ## Solution overview