Use <username>.<pages url> instead of just pages for the default repo

repo.go

@@ -99,7 +99,7 @@ func RepoFromPath(username, host, cname, path string, giteaClient *gitea.Client)
 	log.Debugf("Trying repository pages")
 	repo, err := lookupRepositoryAndCache(
 		username,
-		"pages",
+		domain,
 		host,
 		domain,
 		path,