ie: better category & privacy policy URL

Author: amandasaurus

sources/europe/ie/IrelandBritishWarOffice-GSGS3906.geojson

@@ -74,7 +74,8 @@
         "name": "Ireland British War Office 1:25k GSGS 3906",
         "type": "tms",
         "url": "https://mapwarper.net/layers/tile/101/{zoom}/{x}/{y}.png",
-        "category": "map"
+        "category": "historicmap",
+        "privacy_policy_url": "https://mapwarper.net/privacy"
     },
     "type": "Feature"
 }