Possible bug or incorrect comment found by test improver

[dsyme]

Noting a possible bug found by test coverage improver (it may be a bug in a comment)

From #15

Potential bug identified: The @ operator in VectorOps.fs:46 maps to Power.Invoke instead of Dot.Invoke, which appears incorrect based on the code comments indicating it should be for dot products

[muehlhaus]

Thank you for pointing that out. It should be fixed.