fix(docs): correct component values override instructions (#436)

## What this PR does

Fixes the "Overwriting Component Parameters" section in the components
reference. The previous instructions incorrectly showed overriding
component values through the Platform Package. The correct approach is
to modify the specific Package resource directly (e.g.
`cozystack.metallb`)
and specify values in its `spec.components` section.

The values structure follows the `values.yaml` of the respective system
chart in the Cozystack repository.

Updated the example to show enabling FRR-K8s mode for MetalLB with a
link to the system chart values.

Author: kvaps

content/en/docs/v1/operations/configuration/components.md

@@ -10,31 +10,29 @@ aliases:
 ### Overwriting Component Parameters
 
 You might want to override specific options for the components.
-To achieve this, specify values in the `spec.components` section of the Platform Package.
+To achieve this, modify the corresponding Package resource and specify values
+in the `spec.components` section. The values structure follows the
+[values.yaml](https://github.com/cozystack/cozystack/tree/main/packages/system)
+of the respective system chart in the Cozystack repository.
 
-For example, if you want to overwrite `k8sServiceHost` and `k8sServicePort` for cilium,
-take a look at its [values.yaml](https://github.com/cozystack/cozystack/blob/238061efbc0da61d60068f5de31d6eaa35c4d994/packages/system/cilium/values.yaml#L18-L19) file.
-
-Then specify these options in the `networking` component of your Platform Package:
+For example, if you want to enable FRR-K8s mode for MetalLB, look at its
+[values.yaml](https://github.com/cozystack/cozystack/blob/main/packages/system/metallb/values.yaml)
+to understand the available parameters, then modify the `cozystack.metallb` Package:
 
 ```yaml
 apiVersion: cozystack.io/v1alpha1
 kind: Package
 metadata:
-  name: cozystack.cozystack-platform
+  name: cozystack.metallb
+  namespace: cozy-system
 spec:
-  variant: distro-full
+  variant: default
   components:
-    platform:
-      values:
-        networking:
-          podCIDR: "10.244.0.0/16"
-          serviceCIDR: "10.96.0.0/16"
-    networking:
+    metallb:
       values:
-        cilium:
-          k8sServiceHost: 11.22.33.44
-          k8sServicePort: 6443
+        metallb:
+          frrk8s:
+            enabled: true
 ```
 
 ### Enabling and Disabling Components