Merge pull request #1598 from fluxcd/backport-1597-to-release/v1.8.x

[release/v1.8.x] Improve docs for `.spec.force`

Author: matheuscscp

docs/spec/v1/kustomizations.md

@@ -840,13 +840,20 @@ metadata:
 will replace the resources in-cluster if the patching fails due to immutable
 field changes.
 
-It can also be enabled for specific resources by labelling or annotating them
-with:
+Note that this field should be set temporarily (e.g. when changing Deployment
+pod selectors) and not left enabled on the long run, as force-replacing
+resources may cause downtime.
+
+A safer alternative is to enable force-apply for specific resources by
+labelling or annotating them with:
 
 ```yaml
 kustomize.toolkit.fluxcd.io/force: enabled
 ```
 
+This way, only the targeted resources are force-replaced when immutable field
+changes are made. The annotation should be removed after the change is applied.
+
 ### KubeConfig (Remote clusters)
 
 With the `.spec.kubeConfig` field a Kustomization