Update comment

Author: itsubaki

quantum/qubit/qubit.go

@@ -233,7 +233,7 @@ func (q *Qubit) String() string {
 
 // State returns the state of the qubit at the given index.
 // If no index is provided, it returns the state vector of all qubits,
-// ordered from the most significant bit (MSB) to the least significant bit (LSB) (big-endian).
+// ordered from the most significant bit to the least significant bit.
 func (q *Qubit) State(index ...[]int) []State {
 	if len(index) < 1 {
 		n := q.NumQubits()