Bad `PL` card in K5332187.nec

[StefanBruens]

There is an erroneous ' before the plot card:

https://github.com/tmolteno/necpp/blob/870f110875ef7e1fc951cbd489fde20ac9a93284/testharness/data/K5332187.nec#L17

And Richtanzenne in the header/comment should be Richtantenne.

[StefanBruens]

Dito:

https://github.com/tmolteno/necpp/blob/870f110875ef7e1fc951cbd489fde20ac9a93284/testharness/data/Gs_8d_bb.nec#L26

nec2++ error message:

/usr/bin/nec2++ -i K5332187.nec -o ../out/K5332187.nec.outcpp
                                NEC++ Runtime Error: 
                                FAULTY DATA CARD LABEL AFTER GEOMETRY SECTION.