Fix how archive is created in sitemap

Author: linkdotnet

src/LinkDotNet.Blog.Web/Features/Admin/Sitemap/Services/SitemapService.cs

@@ -31,7 +31,7 @@ public async Task<SitemapUrlSet> CreateSitemapAsync()
         var blogPosts = (await repository.GetAllAsync(f => f.IsPublished, b => b.UpdatedDate)).ToList();
 
         urlSet.Urls.Add(new SitemapUrl { Location = navigationManager.BaseUri });
-        urlSet.Urls.Add(new SitemapUrl { Location = $"{navigationManager.BaseUri}/archive" });
+        urlSet.Urls.Add(new SitemapUrl { Location = $"{navigationManager.BaseUri}archive" });
         urlSet.Urls.AddRange(CreateUrlsForBlogPosts(blogPosts));
         urlSet.Urls.AddRange(CreateUrlsForTags(blogPosts));