feat(serverless): note about ephemeral storage pricing (#3743)

* feat(serverless): note about ephemeral storage pricing

* Apply suggestions from code review

Co-authored-by: nerda-codes <87707325+nerda-codes@users.noreply.github.com>

---------

Co-authored-by: SamyOubouaziz <soubouaziz@scaleway.com>
Co-authored-by: nerda-codes <87707325+nerda-codes@users.noreply.github.com>

Author: 3 people

faq/serverless-containers.mdx

@@ -22,6 +22,7 @@ Serverless Containers are billed on a pay-as-you-go basis, strictly on resource
 
 * **Memory consumption:** The memory consumption is obtained by multiplying the memory tier chosen by the container run duration.
 * **vCPU consumption:** The vCPU consumption is obtained by multiplying the vCPU tier chosen by the container run duration.
+* **Ephemeral storage:** Is free of charge, the maximum value of ephemeral storage depends on the memory value.
 
 <Lightbox src={["scaleway-caas-billing-1.webp", "scaleway-caas-billing-2.webp"]} size={"medium"}  alt={["Scerverless Containers Billing", "Serverless Containers Billing"]} />
 
@@ -117,4 +118,4 @@ Containers use http1 by default, yet the gRPC protocol requires http2. You can u
 ## How does Serverless Container healthcheck work ?
 
 A Serverless Container is set to `ready` once the specified port is correctly bound to the container, and will start receiving traffic. If your application needs to perform some tasks before receiving traffic (e.g. connect to a database), it's important to run them before binding to the port (starting the webserver).
-For now, the `HEALTHCHECK` Docker directive has no impact on container readiness. In the future, the healthcheck will be customizable for your applications.
+For now, the `HEALTHCHECK` Docker directive has no impact on container readiness. In the future, the healthcheck will be customizable for your applications.

faq/serverless-jobs.mdx

@@ -22,6 +22,7 @@ Serverless Jobs are billed on a pay-as-you-go basis, strictly on resource consum
 
 * **Memory consumption:** The memory consumption is obtained by multiplying the memory tier chosen by the job run duration.
 * **vCPU consumption:** The vCPU consumption is obtained by multiplying the vCPU tier chosen by the job run duration.
+* **Ephemeral storage:** Is free of charge, the maximum value of ephemeral storage depends on the memory value.
 
 ### Prices
 
@@ -91,4 +92,4 @@ Scaleway Serverless Jobs is part of the Scaleway ecosystem, it can therefore be
 
 ## Do Serverless Jobs offer parallelization?
 
-Not yet. Scaleway Serverless Jobs will soon offer parallelization via a `parallelism` parameter for each job. This will automatically launch a given number of replicas of the Job container in parallel.
+Not yet. Scaleway Serverless Jobs will soon offer parallelization via a `parallelism` parameter for each job. This will automatically launch a given number of replicas of the Job container in parallel.