fix: update NaaS URL to qa-www for testing

Author: cnbishop

src/Elastic.Documentation.Site/Layout/_AssemblerHeader.cshtml

@@ -3,8 +3,8 @@
 	<div id="elastic-nav" hx-disable="true"></div>
 	@{
 		var elasticNavUrl = Model.Features.StagingElasticNavEnabled
-			? "https://www-elastic-co-pr-3017.app.elstc.co/elastic-nav.js"
-			: "https://www-elastic-co-pr-3017.app.elstc.co/elastic-nav.js";
+			? "https://qa-www.elastic.co/elastic-nav.js"
+			: "https://qa-www.elastic.co/elastic-nav.js";
 	}
 	<script src="@elasticNavUrl" async></script>
 </div>

src/Elastic.Documentation.Site/Layout/_Header.cshtml

@@ -5,8 +5,8 @@
 		<div id="elastic-nav" hx-disable="true"></div>
 		@{
 			var elasticNavUrl = Model.Features.StagingElasticNavEnabled 
-				? "https://www-elastic-co-pr-3017.app.elstc.co/elastic-nav.js"
-				: "https://www-elastic-co-pr-3017.app.elstc.co/elastic-nav.js";
+				? "https://qa-www.elastic.co/elastic-nav.js"
+				: "https://qa-www.elastic.co/elastic-nav.js";
 		}
 		<script src="@elasticNavUrl" async></script>
 	</div>