XWIKI-22433: Provide consistency in info / warning / error class usages in templates

* Fixed an inconsistency in the velocimacro compared to the XWiki macro.

Author: Sereza7

xwiki-platform-core/xwiki-platform-web/xwiki-platform-web-templates/src/main/resources/templates/macros.vm

@@ -959,7 +959,7 @@ $html
   <#if($isInline)span#{else}div#end class="box ${classAffix}message">
     <span class="icon-block">$services.icon.renderHTML($iconName)</span>
     <span class="sr-only">$services.localization.render($prettyNameKey)</span>
-    $text
+    <p>$text</p>
   </#if($isInline)span#{else}div#end>
 #end