Update docs/book/src/migration/legacy.md
# Migration guides from Legacy versions < 3.0.0
-Following the migration guides from the Legacy Kubebuilder versions up its v3x version.
+Follow the migration guides from the legacy Kubebuilder versions up the required latest v3x version.
Note that from v3, a new ecosystem using plugins is introduced for better maintainability, reusability and user
experience .
