added an FAQ for WSL2

Signed-off-by: Rahul Jadhav <nyrahul@gmail.com>

getting-started/FAQ.md

@@ -402,3 +402,11 @@ kubectl apply -f https://raw.githubusercontent.com/kubearmor/KubeArmor/main/depl
 
 **Warning:** After running the above script the nodes will restart.
 </details>
+
+<details><summary><h4>KubeArmor with WSL2</h4></summary>
+
+It is possible to deploy k3s on WSL2 to have a local cluster on your Windows machine. However, the WSL2 environment does not mount securityfs by default and hence `/sys/kernel/security` is not available by default. KubeArmor would still install on such system but without enforcement logic.
+
+Thus with k3s on WSL2, you would still be able to run kubearmor but the block-based policies won't work. Using `karmor probe` would show `Active LSM` as blank which signals that the block-based policies won't work.
+
+</details>