fix missing articles in sitemap

src/sitemap/sitemap.py

@@ -40,7 +40,7 @@ for word, articles in words.items():
     
     
     for article in articles:
-        if article[0] not in seen_articles:
+        if article[1] not in seen_articles:
             out.write("\t<url>\n")
             out.write(f"\t\t<loc>https://ordbokene.no/{article[0]}/{article[1]}</loc>\n")
             out.write(f"\t\t<xhtml:link rel=\"alternative\" href=\"https://ordbokene.no/{article[0]}/{article[1]}/{urllib.parse.quote(word)}\"/>\n")