Spelling fixes

Thanks for fixing my spelling

Co-authored-by: Anton Burmistrov <Night_Pryanik@mail.ru>

data/json/monsters/insect_spider.json

@@ -1861,7 +1861,7 @@
   {
     "id": "mon_aphid",
     "type": "MONSTER",
-    "name": { "str": "giant aphid", "str_pl": "giant aphids" },
+    "name": { "str": "giant aphid" },
     "description": "A green aphid about a size of a rabbit.  It is constantly searching for plants to suck from.  Probably you could sate it for a moment with cattle fodder.",
     "default_faction": "ant",
     "bodytype": "insect",
@@ -1898,7 +1898,7 @@
     "id": "mon_mantis_small",
     "type": "MONSTER",
     "name": { "str": "huge praying mantis" },
-    "description": "A green mutant insect with sharp grappling spikes on it's front legs.  It's a little smaller than an adult person.",
+    "description": "A green mutant insect with sharp grappling spikes on its front legs.  It's a little smaller than an adult person.",
     "copy-from": "mon_mantis_giant",
     "proportional": { "hp": 0.5, "speed": 1.1, "morale": 0.67, "melee_dice_sides": 0.67 },
     "volume": "60 L",
@@ -1909,7 +1909,7 @@
   {
     "id": "mon_mantis_giant",
     "type": "MONSTER",
-    "name": { "str": "giant praying mantis", "str_pl": "giant praying mantises" },
+    "name": { "str": "giant praying mantis" },
     "description": "An enormous green creature grown about a size of a bear.  It dances weirdly and ready to chop your head off in any moment.",
     "default_faction": "mantis",
     "bodytype": "insect",
@@ -1943,8 +1943,8 @@
   {
     "id": "mon_mantis_mega",
     "type": "MONSTER",
-    "name": { "str": "great mantis", "str_pl": "great mantises" },
-    "description": "This ferocious creature is lurking through the land.  It's probably capable of killing a moose with it's powerful arms.",
+    "name": { "str": "great mantis" },
+    "description": "This ferocious creature is lurking through the land.  It's probably capable of killing a moose with its powerful arms.",
     "copy-from": "mon_mantis_giant",
     "proportional": { "hp": 20, "speed": 0.25, "vision_day": 2 },
     "volume": "625 L",
@@ -2086,7 +2086,7 @@
   {
     "id": "mon_antlion_larva",
     "type": "MONSTER",
-    "name": { "str": "giant antlion larva", "str_pl": "giant antlion larvae" },
+    "name": { "str": "giant antlion larva" },
     "description": "This huge grub has powerful mandibles and a hungry look.  It hides in dirt and waits for prey to come clother.",
     "default_faction": "antlion",
     "bodytype": "insect",
@@ -2171,7 +2171,7 @@
     "id": "mon_strider_giant",
     "type": "MONSTER",
     "name": { "str": "giant water strider"  },
-    "description": "This water glider is about as big as a domestic cat.  It's legs are more fin-like and a swollen body is mostly submerged underwater.",
+    "description": "This water glider is about as big as a domestic cat.  Its legs are more fin-like and a swollen body is mostly submerged underwater.",
     "default_faction": "strider",
     "bodytype": "insect",
     "species": [ "INSECT" ],