Merge pull request #214 from archivesspace/update-robots

Update sitemap url in robots.txt

Author: thimios

public/robots.txt

@@ -1,4 +1,4 @@
 User-agent: *
 Allow: /
 
-Sitemap: https://archivesspace-tech-docs.pages.dev/sitemap-index.xml
+Sitemap: https://docs.archivesspace.org/sitemap-index.xml