fix db.operation in semantic-conventions.md
@@ -76,7 +76,7 @@ not values defined by spec.
| `db.mssql.instance_name` | N | - |
| `db.name` | N | only set of JDBC, Mongo, Geode and MongoDB |
| `db.statement` | N | +, except for ElasticSearch and Memcached, see `db.operation` |
-| `db.operation` | N | only set of ElasticSearch and Memcached |
+| `db.operation` | N | only set for ElasticSearch, Memcached and JDBC |
| `db.cassandra.keyspace` | Y | + |
| `db.hbase` | Y | -, HBase is not supported |
| `db.redis.database_index` | N | only set for Lettuce driver, not for Jedis |
