remove wrong suntax note

Author: camilamacedo86

docs/book/src/plugins/plugins-versioning.md

@@ -15,8 +15,6 @@ Project versions should only be increased if a breaking change is introduced in
 Similarly, the introduction of a new plugin version might only lead to a new minor version release of Kubebuilder, since no breaking change is being made to the CLI itself. It'd only be a breaking change to Kubebuilder if we remove support for an older plugin version. See the plugins design doc [versioning section][cli-plugins-versioning]
 for more details on plugin versioning.
 
-<aside class="note">
-
 ## Introducing changes to plugins
 
 Changes made to plugins only require a plugin version increase if and only if a change is made to a plugin