docs: prefix ovhcloud guide section headings with 'step'

Update the numbered section headings in the Talos v1.13 OVHcloud installation guide to include the word 'Step' before each number. This improves readability and makes it clearer to users that these headings represent sequential steps in the installation procedure.

Signed-off-by: Kevin Tijssen <kevin.tijssen@siderolabs.com>

Author: kevintijssen

public/talos/v1.13/platform-specific-installations/cloud-platforms/ovhcloud.mdx

@@ -34,7 +34,7 @@ export LOADBALANCER_NAME=loadbalancer-001
 export LOADBALANCER_FLAVOR_NAME=small
 ```
 
-## 1. Create the image
+## Step 1. Create the image
 
 First, download the <a href={`https://factory.talos.dev/image/376567988ad370138ad8b2698212367b8edcb69b5fd68c80be1f2ec7d603b4ba/${release_v1_13}/akamai-amd64.raw.gz`}> OpenStack image</a> from [Image Factory](https://factory.talos.dev/).
 These images are called `openstack-$ARCH.raw.xz`.
@@ -53,7 +53,7 @@ openstack image create $IMAGE_NAME \
   --progress 
 ```
 
-## 2. Network infrastructure (Optional)
+## Step 2. Network infrastructure (Optional)
 
 If you have an existing network infrastructure, you can skip this step. 
 If not, you can follow the instructions below to create the necessary network infrastructure for your cluster.
@@ -98,7 +98,7 @@ Ports have been opened to ensure that connectivity from both inside and outside
 You will want to allow, at a minimum, ports 6443 (Kubernetes API server) and 50000 (Talos API) from external sources.
 It is also recommended to allow communication over all ports from within the subnet.
 
-## 3. Compute
+## Step 3. Compute
 
 Once the image is uploaded and the network infrastructure is in place, we can create our compute instances.
 We will create 3 control plane nodes.
@@ -144,7 +144,7 @@ for i in $( seq 1 3 ); do
 done
 ```
 
-## 4. Cluster configuration
+## Step 4. Cluster configuration
 
 Now that we have our compute instances and load balancer set up, we can generate our cluster configuration files with `talosctl`.
 We need to get the Public IP of the Load Balancer as this is our Kubernetes API endpoint, and the Public IPs of the control plane nodes as addional-sans for the API certificate.
@@ -165,7 +165,7 @@ talosctl gen config talos-ovhcloud https://$LOADBALANCER_VIP:6443 \
   --additional-sans $CP1_IP,$CP2_IP,$CP3_IP
 ```
 
-## 5. Applying configuration and bootstrapping the cluster
+## Step 5. Applying configuration and bootstrapping the cluster
 
 With our configuration file generated, we can now apply it to our control plane nodes and bootstrap the cluster.
 
@@ -199,15 +199,15 @@ talosctl config node $CP1_IP
 
 You should now be able to interact with your cluster with `talosctl`.
 
-## 6. Retrieve the `kubeconfig`
+## Step 6. Retrieve the `kubeconfig`
 
 At this point we can retrieve the admin `kubeconfig` by running:
 
 ```bash
 talosctl kubeconfig .
 ```
 
-## 7. Add worker nodes to the cluster
+## Step 7. Add worker nodes to the cluster
 
 ```bash
 # Create worker node with the user data file