docs(python): Minor fix in code example in section Coming from Pandas (#11745)

[jrycw]

Pandas transform

Based on the df output, it seems that the order of columns should be ["c", "type"] rather than ["type", "c"].

   c type size
0  1    m    3
1  1    n    3
2  1    o    3
3  2    m    4
4  2    m    4
5  2    n    4
6  2    n    4

[stinodego]

Thanks!