Correct is_corner_lot prefix for athena name (#20)

data-raw/vars_dict.csv

@@ -497,7 +497,7 @@ qu_mlt_cd,card,card,meta_card_num,card_num,Card Number,meta,character,,,
 ,,char_recent_renovation,char_recent_renovation,recent_renovation,Recent Renovation,char,logical,,,
 ,class,char_class,char_class,,Property Class,char,character,,,
 ,,airport_dnl_total,prox_airport_dnl_total,airport_dnl_total,Total Airport Noise DNL,prox,numeric,,,
-,,is_corner_lot,ccao_is_corner_lot,is_corner_lot,Corner Lot,ccao,logical,,,
+,,ccao_is_corner_lot,ccao_is_corner_lot,is_corner_lot,Corner Lot,ccao,logical,,,
 ,,ccao_is_active_exe_homeowner,ccao_is_active_exe_homeowner,is_active_exe_homeowner,Active Homeowner Exemption,ccao,logical,,,
 ,,ccao_n_years_exe_homeowner,ccao_n_years_exe_homeowner,n_years_exe_homeowner,Number of Years Active Homeowner Exemption,ccao,numeric,,,
 ,,sale_count_past_n_years,meta_sale_count_past_n_years,sale_count_past_n_years,Number of sales within previous N years of sale/lien date,meta,numeric,,,