[Identity] Add pointer to examples upfront (Azure#14688)

In Azure#14646, we removed the details on different credentials from the top part of the readme. Adding pointer to the new examples file instead. This is very useful instead of making the user scroll to the bottom

sdk/identity/identity/README.md

@@ -2,6 +2,8 @@
 
 The Azure Identity library provides Azure Active Directory token authentication support across the Azure SDK. It provides a set of [TokenCredential](https://docs.microsoft.com/javascript/api/@azure/core-auth/tokencredential) implementations which can be used to construct Azure SDK clients which support AAD token authentication.
 
+You can find examples for these various credentials in the [Azure Identity Examples Page](https://github.com/Azure/azure-sdk-for-js/blob/master/sdk/identity/identity/samples/AzureIdentityExamples.md)
+
 [Source code](https://github.com/Azure/azure-sdk-for-js/tree/master/sdk/identity/identity) | [Package (npm)](https://www.npmjs.com/package/@azure/identity) | [API Reference Documentation](https://docs.microsoft.com/javascript/api/@azure/identity) | [Product documentation](https://azure.microsoft.com/services/active-directory/) | [Samples](https://github.com/Azure/azure-sdk-for-js/blob/master/sdk/identity/identity/samples)
 
 ## Getting started