[FLINK-38925][docs] Update Matomo URL to the right domain (#1056)

Author: MartijnVisser

.github/workflows/docs.yaml

@@ -82,7 +82,7 @@ jobs:
           -Dcheckstyle.skip=true \
           -Dspotless.check.skip=true \
           -Denforcer.skip=true \
-          -Dheader="<a href=\"http://flink.apache.org/\" target=\"_top\"><h1>Back to Flink Website</h1></a> <script>var _paq=window._paq=window._paq||[];_paq.push([\"disableCookies\"]),_paq.push([\"setDomains\",[\"*.flink.apache.org\",\"*.nightlies.apache.org/flink\"]]),_paq.push([\"trackPageView\"]),_paq.push([\"enableLinkTracking\"]),function(){var u=\"//matomo.privacy.apache.org/\";_paq.push([\"setTrackerUrl\",u+\"matomo.php\"]),_paq.push([\"setSiteId\",\"1\"]);var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s)}();</script>"
+          -Dheader="<a href=\"http://flink.apache.org/\" target=\"_top\"><h1>Back to Flink Website</h1></a> <script>var _paq=window._paq=window._paq||[];_paq.push([\"disableCookies\"]),_paq.push([\"setDomains\",[\"*.flink.apache.org\",\"*.nightlies.apache.org/flink\"]]),_paq.push([\"trackPageView\"]),_paq.push([\"enableLinkTracking\"]),function(){var u=\"//analytics.apache.org/\";_paq.push([\"setTrackerUrl\",u+\"matomo.php\"]),_paq.push([\"setSiteId\",\"1\"]);var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];g.async=true; g.src=u+'matomo.js'; s.parentNode.insertBefore(g,s)}();</script>"
 
           mv target/site/apidocs docs/target/api/java
       - name: Upload documentation

docs/layouts/_default/baseof.html

@@ -34,7 +34,7 @@
     _paq.push(['trackPageView']);
     _paq.push(['enableLinkTracking']);
     (function() {
-      var u="//matomo.privacy.apache.org/";
+      var u="//analytics.apache.org/";
       _paq.push(['setTrackerUrl', u+'matomo.php']);
       _paq.push(['setSiteId', '1']);
       var d=document, g=d.createElement('script'), s=d.getElementsByTagName('script')[0];