refactor: improve comment

Author: 0xClandestine

src/interfaces/IIndexRegistry.sol

@@ -74,7 +74,8 @@ interface IIndexRegistry is IIndexRegistryErrors, IIndexRegistryEvents {
      * @notice Registers the operator with the specified `operatorId` for the quorums specified by `quorumNumbers`.
      * @param operatorId The unique identifier of the operator.
      * @param quorumNumbers The quorum numbers to register for.
-     * @return An array containing the updated number of operators per quorum.
+     * @return An array containing a list of the number of operators (including the registering operator)
+     *         in each of the quorums the operator is registered for.
      * @dev Access restricted to the RegistryCoordinator.
      * @dev Preconditions:
      *         1) `quorumNumbers` has no duplicates