Just some minor JSON fixes I can't categorize properly (#73887)

* minor things

* even shorter boots

data/json/items/comestibles/other.json

@@ -665,7 +665,7 @@
   {
     "type": "GENERIC",
     "id": "cardboard",
-    "name": { "str": "cardboard" },
+    "name": { "str": "piece of cardboard", "str_pl": "pieces of cardboard" },
     "looks_like": "paper",
     "category": "spare_parts",
     "weight": "10 g",
@@ -1613,7 +1613,7 @@
   {
     "id": "swarm_bees",
     "type": "COMESTIBLE",
-    "comestible_type": "FOOD",
+    "comestible_type": "INVALID",
     "name": { "str": "swarm of bees", "str_pl": "swarms of bees" },
     "description": "A swarm of honey bees, displaced from the hive.  Without the support and nutrients of an apiary, or taking root somewhere, they will die in a few days.",
     "//": "While bees have mass and volume, it is easier to round to zero for the purposes of the game.",
@@ -1623,7 +1623,6 @@
     "flags": [ "ZERO_WEIGHT", "INEDIBLE" ],
     "volume": "500 ml",
     "symbol": "B",
-    "color": "yellow",
-    "calories": 0
+    "color": "yellow"
   }
 ]

data/json/recipes/armor/feet.json

@@ -23,7 +23,7 @@
     "difficulty": 2,
     "time": "10 h",
     "autolearn": true,
-    "reversible": true,
+    "reversible": { "time": "3 m" },
     "using": [ [ "tailoring_leather_small", 22 ], [ "fastener_shoes", 2 ], [ "shoe_rubber", 1 ], [ "adhesive_rubber", 1 ] ],
     "proficiencies": [
       { "proficiency": "prof_cobbling" },