Typo fix

[nathanrboyer]

"its two" implies that there are only two columns, but there are three. It is selecting two of the three.

This is a small thing, but it took me longer than I would like to admit to understand what was happening in the example.

julia> @chain df begin
           @rsubset :age > 40 
           @select(:number_of_children = :children, :name)
       end
2×2 DataFrame
 Row │ number_of_children  name
     │ Int64               String
─────┼────────────────────────────
   1 │                  0  John
   2 │                  4  Roger

[bkamins]

Thank you!