fix(ins): fix typo

Author: bene2k1

pages/instances/reference-content/general-purpose.mdx

@@ -16,7 +16,7 @@ An Instance is a virtual machine in the cloud. Scaleway supports several [types
   POP2 Instances are recommended for general workloads, unless your workload specifically needs features unique to ENT1 Instances.
 </Message>
 
-# ENT1 Instances
+## ENT1 Instances
 
 Scaleway's **General Purpose** range includes Enterprise Instances (ENT1). ENT1 Instances are high-end, dedicated cloud Instances for demanding workloads. They offer the highest consistent performance per core to support real-time applications. In addition, their computing power makes them generally more robust for compute-intensive workloads.