Fix some WML glitches revealed by new wmllint tests.

data/campaigns/Eastern_Invasion/scenarios/15.Approaching_Weldyn.cfg

@@ -46,7 +46,9 @@
         controller=ai
         recruit=Skeleton,Skeleton Archer,Ghost
         {GOLD 250 300 350}
-        recruitment_pattern=fighter,archer,scout
+        [ai]
+            recruitment_pattern=fighter,archer,scout
+        [/ai]
         team_name=bad
         user_team_name=_"Evil"
         {INVADER_AI_STUFF}
@@ -61,7 +63,9 @@
         controller=ai
         recruit=Walking Corpse,Vampire Bat,Skeleton
         {GOLD 250 300 350}
-        recruitment_pattern=fighter,fighter,scout
+        [ai]
+            recruitment_pattern=fighter,fighter,scout
+        [/ai]
         team_name=bad
         user_team_name=_"Evil"
         {INVADER_AI_STUFF}
@@ -76,7 +80,9 @@
         controller=ai
         recruit=Revenant,Bone Shooter,Wraith
         {GOLD 325 375 425}
-        recruitment_pattern=fighter,archer,scout
+        [ai]
+            recruitment_pattern=fighter,archer,scout
+        [/ai]
         team_name=bad
         user_team_name=_"Evil"
         {INVADER_AI_STUFF}

data/campaigns/Northern_Rebirth/scenarios/02_Infested_Caves.cfg

@@ -88,7 +88,9 @@
         recruit=Dwarvish Fighter,Dwarvish Thunderer
         team_name=rebels
         user_team_name=_"Rebels"
-        recruitment_pattern=fighter,fighter,fighter,mixed fighter
+        [ai]
+            recruitment_pattern=fighter,fighter,fighter,mixed fighter
+        [/ai]
     [/side]
 
     # Three undead sides

data/campaigns/Northern_Rebirth/scenarios/13a_Showdown.cfg

@@ -30,7 +30,7 @@
         canrecruit=yes
         side=1
         controller=human
-        recruit=Peasant,Woodsman,Thug,Poacher,Spearman,Bowman,,Dwarvish Ulfserker,Gryphon,Footpad
+        recruit=Peasant,Woodsman,Thug,Poacher,Spearman,Bowman,Dwarvish Ulfserker,Gryphon,Footpad
         team_name=knalgans
         user_team_name=_"Alliance"
         gold=100

data/campaigns/Northern_Rebirth/scenarios/14a_Epilogue.cfg

@@ -22,7 +22,7 @@
         canrecruit=yes
         side=1
         controller=human
-        recruit=Peasant,Woodsman,Thug,Poacher,Spearman,Bowman,,Dwarvish Ulfserker
+        recruit=Peasant,Woodsman,Thug,Poacher,Spearman,Bowman,Dwarvish Ulfserker
         team_name=alliance
         user_team_name=_"Alliance"
     [/side]

data/campaigns/Two_Brothers/scenarios/2_The_Chase.cfg

@@ -132,7 +132,9 @@
         income=-8
         team_name=elves
         user_team_name=_"Elves"
-        recruitment_pattern=scout
+        [ai]
+            recruitment_pattern=scout
+        [/ai]
 
         [unit]
             side=2