docs: add oracles detail endpoint

README.md

@@ -2643,8 +2643,31 @@ $ curl -s "https://mainnet.aeternity.io/mdw/v3/oracles?state=active&limit=1" | j
 }
 ```
 
+### `/v3/oracles/:id`
+
+```
+$ curl -s "https://mainnet.aeternity.io/mdw/v3/oracles/ok_R7cQfVN15F5ek1wBSYaMRjW2XbMRKx7VDQQmbtwxspjZQvmPM" | jq '.'
+{
+  "active": false,
+  "active_from": 4660,
+  "expire_height": 6894,
+  "approximate_expire_time": 1544587118827,
+  "register_time": 1544194831238,
+  "register_tx_hash": "th_2SLFNYk5s5u5tRD4Bqx6pSc1mysZMsCr3szbx55nKgVBQSiZv2",
+  "format": {
+    "query": "string",
+    "response": "string"
+  },
+  "oracle": "ok_R7cQfVN15F5ek1wBSYaMRjW2XbMRKx7VDQQmbtwxspjZQvmPM",
+  "query_fee": 20000,
+  "register": 11023
+}
+```
+
 ### `/v3/oracles/:id/queries`
 
+Paginated list of an oracle's queries.
+
 ```
 $ curl -s "https://mainnet.aeternity.io/mdw/v3/oracles/ok_R7cQfVN15F5ek1wBSYaMRjW2XbMRKx7VDQQmbtwxspjZQvmPM/queries" | jq '.'
 {