MP Tombs of Kesorak: adjust comment, avoid darkening overlay

A better image is needed, I remove the darkening overlay, because it would be
missleading when a Mage of Light affects this field.

[ci skip]

(cherry-picked from commit 0ef3c0d5f9)

data/multiplayer/scenarios/2p_Tombs_of_Kesorak.cfg

@@ -13,8 +13,8 @@
     {DEFAULT_MUSIC_PLAYLIST}
 
 
-    # The Schedule macros set the red,green,blue values and an id, other things are overwritten.
-    # Thea are ordered from dawn to 2nd night.
+    # The Schedule macros set the red, green, blue values and an id, other things are overwritten.
+    # They are ordered from dawn to 2nd night.
 
     # Dark area
     [time_area]
@@ -78,7 +78,11 @@
         y=12
         {FIRST_WATCH}
         [+time]
-            image=misc/time-schedules/after-the-fall/6shortdark.png~BLIT(misc/tod-dark.png)~BLIT(misc/tod-dark.png)
+            # Here should be an always neutral image with darkened with tod-dark,
+            # or an always chaotic image without darkening adjustment.
+            # The later is prefered, as both darkening and enlightening overlays
+            # can be applied simultaneously by bystanding units,
+            image=misc/time-schedules/after-the-fall/6shortdark.png
             red=-85
         [/time]
     [/time_area]