Use the photo-anchored ashlar limestone on the masonic facade

docs/screens/boards/elcapitan-day-board.json

@@ -1,6 +1,6 @@
 {
   "board": "elcapitan-day-board.jpg",
-  "caption": "El Capitan facade, day: 2009 CC BY photo | photo-anchored concept | current capture",
+  "caption": "El Capitan facade, day. Photo: CC BY 2.0 2009 via refs/hollywood. Concept: photo-anchored. Capture: ashlar limestone pass (limestone_ashlar, 768 px tile, ~167 px/m).",
   "photo": "docs/screens/refs/hollywood/el-capitan-facade-day-wikimedia-2009-10-27.jpg",
   "concept": "docs/screens/concepts/hollywood_boulevard/hollywood_boulevard_entrance_day-v2.png",
   "capture": "docs/screenshots/01-venue-overview.png"