fix: remove redundant empty last row in table (authentication-requests-and-responses.md)

Author: Styxxy

articles/key-vault/general/authentication-requests-and-responses.md

@@ -31,7 +31,6 @@ Here are the URL suffixes used to access each type of object
 |Secrets|/secrets|
 |Certificates| /certificates|
 |Storage account keys|/storageaccounts
-||
 
 Azure Key Vault supports JSON formatted requests and responses. Requests to the Azure Key Vault are directed to a valid Azure Key Vault URL using HTTPS with some URL parameters and JSON encoded request and response bodies.