update description and indentation

Author: kenzoengineer

sentry-options/schemas/snuba/schema.json

@@ -1,11 +1,11 @@
 {
-    "version": "1.0",
-    "type": "object",
-    "properties": {
-      "consumer.use_item_timestamp": {
-        "type": "boolean",
-        "default": false,
-        "description": "whether or not to use received or timestamp on an item event"
-      }
+  "version": "1.0",
+  "type": "object",
+  "properties": {
+    "consumer.use_item_timestamp": {
+      "type": "boolean",
+      "default": false,
+      "description": "true to use the item timestamp, false for the received timestamp"
     }
   }
+}