Update sitemap URLs to new domain

Signed-off-by: Tutos Rive <108991712+tutosrive@users.noreply.github.com>

Author: tutosrive

sitemap.xml

@@ -1,9 +1,9 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
   <sitemap>
-    <loc>https://www.dev2forge.software/configs/site/web/sitemap/sitemap-main.xml</loc>
+    <loc>https://dev2forge.is-a.software/configs/site/web/sitemap/sitemap-main.xml</loc>
   </sitemap>
   <sitemap>
-    <loc>https://docs.dev2forge.software/configs/site/web/sitemap/sitemap-docs.xml</loc>
+    <loc>https://docs.dev2forge.is-a.software/configs/site/web/sitemap/sitemap-docs.xml</loc>
   </sitemap>
 </sitemapindex>