no-jira: change iframe auto-closing tag

src/main/java/org/olat/course/nodes/livestream/ui/_content/video.html

@@ -3,6 +3,6 @@
 	<div class="o_instruction o_paella_error">
 		$r.translate("viewer.error.browser")
 	</div>
-	<iframe id="${id}" allowfullscreen="true" src="${baseURI}" frameborder="0" />
+	<iframe id="${id}" allowfullscreen="true" src="${baseURI}" frameborder="0"></iframe>
 </div>
 #end
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