Add categories descriptions

Signed-off-by: gearnode <bryan@frimin.fr>

controls/physical/facilities/README.md

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+# Secure your offices and internet access
+
+Start by assessing whether your team works from a physical office or operates
+remotely, as this will guide your approach to securing the workspace.
+
+## Why does it matter?
+
+Unauthorized access to your office or network can lead to serious consequences
+such as data theft, or other serious issues. Protecting both physical and
+digital environments is essential to mitigate those risks.
+
+## How can I proceed?
+
+We break this into two main areas of focus:
+
+1. **Office Security:** Ensure that the access to your office is secured against
+   unauthorized entry.
+2. **Internet Security:** Ensure that members of your teams or contractors that
+   work remotely have a secure access to internet.