fix: improve description on rag_abstract

see: #3489 (comment)

Co-authored-by: Coolthulhu <[email protected]>

data/json/items/generic.json

@@ -1688,7 +1688,7 @@
     "abstract": "rag_abstract",
     "type": "GENERIC",
     "name": { "str": "rag" },
-    "description": "Rag",
+    "description": "This is a largish piece of cloth, useful in crafting and possibly for staunching bleeding.  It's a bug if you see this.",
     "category": "spare_parts",
     "weight": "80 g",
     "volume": "250 ml",