Merge pull request #89021 from changeworld/patch-22

Fix typo

Author: ktoliver

articles/azure-sql/managed-instance/user-initiated-failover.md

@@ -94,7 +94,7 @@ Use the following CLI command to failover read secondary node, applicable to BC
 az sql mi failover -g myresourcegroup -n myinstancename --replica-type ReadableSecondary
 ```
 
-### Using Rest API
+### Using REST API
 
 For advanced users who would perhaps need to automate failovers of their SQL Managed Instances for purposes of implementing continuous testing pipeline, or automated performance mitigators, this function can be accomplished through initiating failover through an API call. see [Managed Instances - Failover REST API](/rest/api/sql/managed%20instances%20-%20failover/failover) for details.