Sync eng/common directory with azure-sdk-tools repository (Azure#20604)

Author: azure-sdk

eng/common/docgeneration/templates/matthews/partials/head.tmpl.partial

@@ -19,10 +19,10 @@
   <!-- Global site tag (gtag.js) - Google Analytics -->
   <script async src="https://www.googletagmanager.com/gtag/js?id=GA_CAMPAIGN_ID"></script>
   <script>
-  window.dataLayer = window.dataLayer || [];
-  function gtag(){dataLayer.push(arguments);}
-  gtag('js', new Date());
+    window.dataLayer = window.dataLayer || [];
+    function gtag(){dataLayer.push(arguments);}
+    gtag('js', new Date());
 
-  gtag('config', 'GA_CAMPAIGN_ID');
+    gtag('config', 'GA_CAMPAIGN_ID');
   </script>
 </head>