Apply suggestion from @camilamacedo86

Co-authored-by: Camila Macedo <7708031+camilamacedo86@users.noreply.github.com>

Author: vitorfloriano

docs/book/src/reference/commands/alpha_update.md

@@ -89,7 +89,7 @@ Once updated, you can use `kubebuilder alpha update` for future upgrades.
 | `--from-branch`     | Git branch that contains your current project code. Defaults to `main`.                                                                                        |
 | `--force`           | Force the update even if conflicts occur. Conflicted files will include conflict markers, and a commit will be created automatically. Ideal for automation (e.g., cronjobs, CI).                                                                       |
 | `-h, --help`        | Show help for this command.                                                                                                                                    |
-<aside class="note warning">
+<aside class="note">
 Projects generated with **Kubebuilder v4.6.0** or later include the `cliVersion` field in the `PROJECT` file.
 This field is used by `kubebuilder alpha update` to determine the correct CLI
 version for upgrading your project.