add sitemap url to head

Signed-off-by: rishichawda <[email protected]>

Author: rishichawda

src/components/seo.astro

@@ -17,6 +17,7 @@ const canonicalURL = new URL(
 <title>{title}</title>
 <meta name="viewport" content="width=device-width" />
 <link rel="icon" type="image/png" href={favicon.src} />
+<link rel="sitemap" href="/sitemap-index.xml" />
 <meta name="description" content={description} />
 <meta name="image" content={image} />
 {keywords ? <meta name="keywords" content={keywords} /> : null}