updated contact info

hadoop-tools/hadoop-azure/src/site/markdown/fns_blob.md

@@ -137,7 +137,7 @@ The following configs are related to rename and delete operations.
   blob-delete
   orchestration. The default value currently is 5.
 
-### <a name="unsupported features"></a> Features currently not supported
+## Features currently not supported
 
 1. User Delegation SAS is currently not supported but we
    plan to bring support for it in the future.
@@ -148,4 +148,9 @@ The following configs are related to rename and delete operations.
 2. Context Provider Key (CPK) support is currently not available. It refers to the ability to use a
 customer-provided encryption key to encrypt and decrypt data in Azure Blob
 Storage. This feature allows users to manage their own encryption keys,
-providing an additional layer of security and control over their data.
+providing an additional layer of security and control over their data.
+
+## Ask all about ABFS Driver
+
+For any queries related to onboard to FNS Blob or anything related to ABFS
+Driver in general, kindly reach out to us at **[email protected]**.