add metadata

Author: komaksym

questions/195_gradient-checkpointing/meta.json

@@ -1,12 +1,10 @@
-{
-  "id": "XXX",
-  "title": "TITLE GOES HERE",
+c
+  "id": "195",
+  "title": "Gradient Checkpointing",
   "difficulty": "medium",
   "category": "Machine Learning",
   "video": "",
   "likes": "0",
   "dislikes": "0",
-  "contributor": [],
-  "tinygrad_difficulty": "",
-  "pytorch_difficulty": ""
+  "contributor": []
 }