X-CleverCloud-Header header to identify a monitoring ping (#469)

## Describe your PR

Added a note in FAQ to explain how to identify a monitoring request
using `X-CleverCloud -Monitoring` header


## Checklist

- [x] My PR is related to an opened issue : #69
- [x] I've read the [contributing
guidelines](/CleverCloud/documentation/blob/main/CONTRIBUTING.md)


## Reviewers
@CleverCloud/reviewers

---------

Co-authored-by: Pierre L. / Peyo <[email protected]>
Co-authored-by: Clément Nivolle <[email protected]>
Co-authored-by: Corentin BARAULT <[email protected]>
Co-authored-by: David Legrand <[email protected]>

content/doc/find-help/faq.md

@@ -71,14 +71,6 @@ We will investigate and contact the application's owner over the violation if ne
 
 ## Does Clever Cloud support TLS/SSL (HTTPS)?
 
-<<<<<<< HEAD
-Absolutely! For testing purposes, `cleverapps.io` domains support TLS out of the box. For custom SSL certificates, you can either order one from us or use an existing one.
-Have a look at [installing SSL certificates]({{< ref"doc/administrate/ssl" >}} "Install a certificate SSL"), and feel free to contact us at <[email protected]> if you have questions.
-
-## I'd like to have two applications available on the same domain name
-
-Please refer to [prefix routing](../../administrate/domain-names/#prefix-routing) to learn how to have two applications share a domain name.
-=======
 Yes. For testing purposes, `cleverapps.io` domains support TLS out of the box. For custom SSL certificates, you can either generate one automatically with Let's Encrypt while adding a domain, or [use an existing one]{{< ref "doc/administrate/ssl/#uploading-my-own-certificates" >}}).
 Have a look at [installing TLS certificates](/doc/administrate/ssl), and feel free to contact the support team in the [Ticket Center](https://console.clever-cloud.com/ticket-center-choice) if you have questions.
 
@@ -93,7 +85,6 @@ nmap --script ssl-enum-ciphers -p 443 example.com
 ## I'd like to have two applications available on the same domain name
 
 Refer to [prefix routing]({{< ref "doc/administrate/domain-names/#prefix-routing" >}}) to learn how to have two applications share a domain name.
->>>>>>> origin/main
 
 ## How do I define cron jobs for my application?
 
@@ -230,10 +221,15 @@ This way, even if one data center has an accident, your backup are still safe in
 To create add-ons, you need to complete your account information, including your city and ZIP code. 
 For instance, you cannot create a Matomo add-on until you provide these details.
 
+## I get unknown regular requests, is there a problem ? 
+
+The platform performs routine health checks to applications every 2 minutes. You may notice these periodic HTTP requests in your logs, with `X-Clever-Monitoring` header. They're part of Clever Cloud's standard monitoring process.
+
 ## What is a DEV plan ? 
 
 DEV plan is a free-tier plan available for some databases, designed to let customers explore and test these products. They operate on shared clusters, which may result in variable performance; they also have no SLA guarantees.
 
-Some features such as simultaneous connections numbers, functions... might be reduced or unavailable. 
+Some features such as simultaneous connections numbers, functions… might be reduced or unavailable. 
 
 Support is not able to provide help in case of DEV plan.
+