Fix URL for OpenLab Augsburg in directory.json (#310)

Author: waaaaargh

directory.json

@@ -157,7 +157,7 @@
   "Omega Verksted": "https://omegav.no/api/spaceapi.php",
   "Open Space Aarhus": "http://spaceapi.osaa.dk/status/json",
   "Open-Lab Vorarlberg": "https://spaceapi.open-lab.at/spaceapi.php",
-  "OpenLab Augsburg": "http://api.openlab-augsburg.de/data.json",
+  "OpenLab Augsburg": "https://api.openlab-augsburg.de/data.json",
   "P'yŏngyang Hackerspace": "http://status.pyongyanghackerspace.org/jiwi.json",
   "Pangloss Labs #1": "https://spaceapi.panglosslabs.org/spaceapi.json",
   "Pawprint Prototyping": "https://members.pawprintprototyping.org/api/spacedirectory/",