fix(rdb): fix title

Author: bene2k1

pages/managed-databases-for-postgresql-and-mysql/api-cli/connecting-managed-database-to-kubernetes.mdx

@@ -81,7 +81,7 @@ Create a Private Network that both your Kubernetes cluster and database will use
     private-network-id=<private-network-id>
     ```
 
-### Creating a Kubernetes Kapsule Cluster
+### Creating a Kubernetes Kapsule cluster
 
 1. Run the following Scaleway CLI command to create a Kubernetes Kapsule cluster attached to the same Private Network:
 
@@ -172,7 +172,7 @@ Install Terraform and ensure the Scaleway Terraform provider is set up with `ter
     ADD CONTENT FROM MAIN.TF FILE
     ```
 
-### Creating a `terraform.tfvars` file
+### Creating a terraform.tfvars file
 
 Create a file to store your variables securely: