Fix Anvil, Boar and Torch engine's Isp curves to go towards 0 Isp at high ambient pressures.

Distribution/RestockPlus/GameData/ReStockPlus/Parts/Engine/0625/restock-engine-torch.cfg

@@ -146,7 +146,7 @@ PART
     {
       key = 0 295
       key = 1 275
-      key = 12 100
+      key = 12 0.001
     }
   }
   MODULE

Distribution/RestockPlus/GameData/ReStockPlus/Parts/Engine/1875/restock-srb-anvil.cfg

@@ -135,7 +135,7 @@ PART
     {
       key = 0 238
       key = 1 212
-      key = 4 100
+      key = 4 0.001
     }
   }
   RESOURCE

Distribution/RestockPlus/GameData/ReStockPlus/Parts/Engine/25/restock-engine-boar.cfg

@@ -164,7 +164,7 @@ PART
     {
       key = 0 300
       key = 1 280
-      key = 12 100
+      key = 12 0.001
     }
   }
   MODULE