Correct storage-derived RAM values in dell device records

Author: Seungpyo1007

data/smartphone/dell/2012/xps-10.json

@@ -5,12 +5,13 @@
   "brand": "dell",
   "soc": "dual-core-1-5-ghz",
   "release_date": "2012-01-01",
-  "ram_gb": 64,
+  "ram_gb": 2,
   "battery_mah": 1500,
   "weight_g": 150.0,
   "os": "Windows Mobile",
   "verified": false,
   "source_urls": [
+    "https://www.karma-group.ru/upload/iblock/4ce/Dell_XPS_10.15ffb8a4c4dcc24d4201af8c5bf544e4f6.pdf",
     "https://www.kaggle.com/datasets/msainani/gsmarena-mobile-devices"
   ],
   "storage_options_gb": [