fix train_station.json

Author: novolife

data/presets/building/train_station.json

@@ -6,11 +6,11 @@
     "tags": {
         "building": "train_station"
     },
-    "terms": {
+    "terms": [
         "halt",
         "railway station",
         "terminal"
-    },
+    ],
     "matchScore": 0.5,
     "name": "Train Station Building"
 }