rows/columns mistake Array Indexing and Slicing / Boolean Indexing

[edutools-service]

I think it should be "columns" in the sentence "The 2nd and 4th rows are selected from the indexed array and combined to make a 2D array."

[sofiiako]

Already fixed here https://github.com/jetbrains-academy/Python-Libraries-NumPy/commit/2a371b4ae22b1f4ee90d539709d0ae94f261960d