NIP-60: jsonconc -> jsonc (nostr-protocol#1727)

Author: patrickReiis

60.md

@@ -134,7 +134,7 @@ While the client is fetching (and perhaps validating) proofs it can use the opti
 
 ## Spending token
 If Alice spends 4 sats from this token event
-```jsonconc
+```jsonc
 {
     "kind": 7375,
     "id": "event-id-1",
@@ -155,7 +155,7 @@ If Alice spends 4 sats from this token event
 
 Her client:
 * MUST roll over the unspent proofs:
-```jsonconc
+```jsonc
 {
     "kind": 7375,
     "id": "event-id-2",
@@ -176,7 +176,7 @@ Her client:
 * MUST delete event `event-id-1`
 * SHOULD add the `event-id-1` to the `del` array of deleted token-ids.
 * SHOULD create a `kind:7376` event to record the spend
-```jsonconc
+```jsonc
 {
     "kind": 7376,
     "content": nip44_encrypt([