chore(gpu): fix product name for the cost of SXM5

Author: agnesLeroy

ci/ec2_products_cost.json

@@ -12,7 +12,7 @@
   "n3-H100x4": 6.08,
   "n3-H100x2": 3.04,
   "n3-L40x1": 0.80,
-  "n3-H100x8-SXM5": 15.36,
+  "n3-H100-SXM5x8": 15.36,
   "hpu_x1": 1.0,
   "hpu_x2": 1.4,
   "hpu_x4": 2.3,