Make cranberry juice not fun (#40503)

cranberry_juice appears to represent unsweetened, full strength
cranberry juice.  That will not be pleasant to drink by the cup.
At the very least you would want to dilute it, but more likely
you would want to add sweetener or mix with a juice that is sweet.

data/json/items/comestibles/drink.json

@@ -341,7 +341,7 @@
     "quench": 37,
     "healthy": 2,
     "calories": 112,
-    "description": "Made from real Massachusetts cranberries.  Delicious and nutritious.",
+    "description": "Made from real Massachusetts cranberries.  Quite sour, but nutritious.",
     "price": 80,
     "price_postapoc": 50,
     "material": "fruit",
@@ -350,7 +350,7 @@
     "phase": "liquid",
     "flags": [ "EATEN_COLD" ],
     "vitamins": [ [ "vitA", 1 ], [ "vitC", 131 ], [ "calcium", 3 ], [ "iron", 1 ] ],
-    "fun": 3
+    "fun": -1
   },
   {
     "type": "COMESTIBLE",