Change First Sitemap File to sitemap.xml
Change First Sitemap File to sitemap.xml

Change first sitemap file from sitemap-1.xml to sitemap.xml

This is for the benefit of sites that have less than 50,000 pages and
will only have one sitemap file

thu0ng91/sitemap-php,dilistinc/sitemap-php,marclaporte/sitemap-php,o/sitemap-php,evert/sitemap-php,Adnan0703/sitemap-php