Use relative URIs for {source_file,log,commit}_uri

Signed-off-by: Lukas Fleischer <lfleischer@archlinux.org>

conf/config.defaults

@@ -28,9 +28,9 @@ request_idle_time = 1209600
 request_archive_time = 15552000
 auto_orphan_age = 15552000
 auto_delete_age = 86400
-source_file_uri =  https://aur.archlinux.org/cgit/aur.git/tree/%s?h=%s
-log_uri = https://aur.archlinux.org/cgit/aur.git/log/?h=%s
-commit_uri = https://aur.archlinux.org/cgit/aur.git/commit/?h=%s&id=%s
+source_file_uri = /cgit/aur.git/tree/%s?h=%s
+log_uri = /cgit/aur.git/log/?h=%s
+commit_uri = /cgit/aur.git/commit/?h=%s&id=%s
 snapshot_uri = /cgit/aur.git/snapshot/%s.tar.gz
 enable-maintenance = 1
 maintenance-exceptions = 127.0.0.1