Fixes some dungeosn that were using the wrong type of rock walls (#7809)

Resulting in indestructible turfs where there are not supposed to be any

html/changelogs/Ferner-191225-bugfix_somedungeons.yml

@@ -0,0 +1,4 @@
+author: Ferner
+delete-after: True
+changes: 
+  - bugfix: "Fixed some dungeons that were using indestructible rock instead of regular rock walls."

maps/dungeon_spawns/listening_post_unique.dmm

@@ -15,7 +15,7 @@
 /turf/simulated/floor,
 /area/dungeon/syndie_listening_post)
 "ad" = (
-/turf/unsimulated/mineral/asteroid,
+/turf/simulated/mineral,
 /area/mine/unexplored)
 "ae" = (
 /obj/machinery/embedded_controller/radio/airlock/airlock_controller{

maps/dungeon_spawns/satellite_crash_unique.dmm

@@ -6,7 +6,7 @@
 /turf/unsimulated/floor/asteroid/ash/rocky,
 /area/mine/unexplored)
 "c" = (
-/turf/unsimulated/mineral/asteroid,
+/turf/simulated/mineral,
 /area/mine/unexplored)
 "d" = (
 /obj/structure/girder,

maps/dungeon_spawns/sol_bunker_unique.dmm

@@ -1129,7 +1129,7 @@
 /turf/simulated/floor/tiled/dark,
 /area/dungeon/sol_outpost)
 "dc" = (
-/turf/unsimulated/mineral/asteroid,
+/turf/simulated/mineral,
 /area/mine/unexplored)
 "dd" = (
 /obj/effect/decal/remains/rat,