Update directory.json

Correct SpaceAPI Entry for Milwaukee Makerspace

Author: DanDude0

directory.json

@@ -139,7 +139,7 @@
   "Metro Olografix": "https://sede.olografix.org/spaceapi.json",
   "MidsouthMakers": "http://midsouthmakers.org/spaceapi/",
   "Milton Keynes Makerspace": "https://raw.githubusercontent.com/MKMakerSpace/spaceapi-endpoint/main/spaceapi.json",
-  "Milwaukee Makerspace": "http://apps.2xlnetworks.net/milwaukeemakerspace/",
+  "Milwaukee Makerspace": "https://milwaukeemakerspace.org/spaceapi.json",
   "Minsk Hackerspace": "https://hackerspace.by/spaceapi",
   "Mittelab": "https://api.mittelab.org/spaceapi",
   "Motionlab": "https://spaceapi.motionlab.berlin/",