TSG S02 Adjust turns to reality

If the user only has 9 turns let's show that everywhere.

data/campaigns/The_South_Guard/scenarios/02_Proven_by_the_Sword.cfg

@@ -21,7 +21,7 @@
     {DEFAULT_SCHEDULE_SECOND_WATCH}
 
     victory_when_enemies_defeated=no
-    {TURNS 40 32 28}
+    turns=9
 
     # Scenario Introduction - Not all is right in Westin.
 
@@ -200,7 +200,7 @@
                         boolean_not_equals=yes
                     [/variable]
                 [/show_if]
-                description= _ "Occupy the Citadel of Westin by the end of the ninth turn"
+                description= _ "Occupy the Citadel of Westin"
                 condition=win
             [/objective]
             [objective]
@@ -264,6 +264,11 @@
         [/filter]
 
         {VARIABLE citadel_secured "yes"}
+
+        [modify_turns]
+            {QUANTITY add 31 23 19}
+        [/modify_turns]
+
         # check if it is Deoran. If not, tell him to go to Westin
         [if]
             [have_unit]