docs(datacenters): tighten the Norway refresh notes

changelog.d/953-datacenters-norway-refresh.md

@@ -1,4 +1,2 @@
-- Refresh Norway's datacenters from a Geofabrik OpenStreetMap extract
-  (2026-10-05). Troll Housing joins the layer (4,352 features) and four
-  Norwegian sites pick up current OSM tags; no site moved or was removed
-  (trygvehhh, #953).
+- Add Troll Housing to the Datacenters layer (4,352 features) by refreshing
+  Norway from OpenStreetMap data of 2026-10-05 (trygvehhh, #953).

docs/INFRASTRUCTURE-LAYERS.md

@@ -59,4 +59,4 @@ globals.
 Dataset files and source/license notices remain under `src/data/local_data/`.
 Their input counts are 4,352 datacenter features and 704 dam features. Cesium may
 expand multipart geometries into multiple entities; entity and stem counts are
-different measurements. This change does not refresh or relicense the datasets.
+different measurements.

src/data/local_data/datacenters/README.md

@@ -19,11 +19,9 @@ snapshot. Future refreshes should record both before replacing the file.
 
 ## Norway refresh
 
-Features inside the Geofabrik Norway boundary (`norway.poly`, which includes
-Svalbard) were refreshed separately, so this file mixes two vintages: Norway
-reflects OSM as of the extract below, everything else the original snapshot.
+Features inside Geofabrik's Norway boundary (`norway.poly`, with Svalbard) come
+from a newer extract than the rest of the file. Contact tags are dropped as above.
 
 - Extract: Geofabrik `norway-261005.osm.pbf`, OSM data
   2026-10-05T20:21:35Z, MD5 `1d2cfdeb98980fce11b8891d0f9146c0`
 - Filter: `osmium tags-filter nwr/telecom=data_center nwr/building=data_center`
-- Contact tags are dropped as above.