chore: fix typos in rust code comment or error message

src/db/fjall_adapter.rs

@@ -272,7 +272,7 @@ impl<'a> FjallTx<'a> {
 	fn get_tree(&self, i: usize) -> TxOpResult<&TransactionalPartitionHandle> {
 		self.trees.get(i).map(|tup| &tup.1).ok_or_else(|| {
 			TxOpError(Error(
-				"invalid tree id (it might have been openned after the transaction started)".into(),
+				"invalid tree id (it might have been opened after the transaction started)".into(),
 			))
 		})
 	}

src/db/lib.rs

@@ -133,7 +133,7 @@ impl Db {
 				Err(TxError::Db(tx_e))
 			}
 			(Err(TxError::Db(tx_e)), Some(Ok(_))) => {
-				// Transaction encounterred a DB error when commiting the transaction,
+				// Transaction encounterred a DB error when committing the transaction,
 				// after user code was called
 				Err(TxError::Db(tx_e))
 			}