fix(google tag manager): fixed link to google tag manager, fixes #4005

public/views/index.html

@@ -81,7 +81,7 @@
 			}];
 		</script>
 		<!-- Google Tag Manager -->
-		<noscript><iframe src="//www.googletagmanager.com/ns.html?id=GTM-K2MJ65" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
+		<noscript><iframe src="//www.googletagmanager.com/ns.html?id=[[.GoogleTagManagerId]]" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
 		<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
 			j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='//www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
 		})(window,document,'script','dataLayer','[[.GoogleTagManagerId]]');</script>