Update promotions.md
Update promotions.md

`Adjustment#determine_eligibility` && `Promotion#rules_are_eligible?` seems to have been deprecated at some point and no longer exist.

I tried to correct the text as best as I could.

Thank you

Fixes #5347

alvinjean/spree,forkata/solidus,vmatekole/spree,bricesanchez/spree,reidblomquist/spree,berkes/spree,Migweld/spree,bonobos/solidus,camelmasa/spree,Senjai/solidus,Ropeney/spree,rajeevriitm/spree,fahidnasir/spree,Hawaiideveloper/shoppingcart,Arpsara/solidus,project-eutopia/spree,yiqing95/spree,robodisco/spree,jeffboulet/spree,gautamsawhney/spree,Ropeney/spree,quentinuys/spree,rakibulislam/spree,abhishekjain16/spree,maybii/spree,tancnle/spree,grzlus/spree,adaddeo/spree,TrialGuides/spree,degica/spree,builtbybuffalo/spree,ujai/spree,lsirivong/solidus,radarseesradar/spree,miyazawatomoka/spree,forkata/solidus,SadTreeFriends/spree,reinaris/spree,assembledbrands/spree,DynamoMTL/spree,wolfieorama/spree,sliaquat/spree,tomash/spree,reinaris/spree,yushine/spree,Machpowersystems/spree_mach,vinayvinsol/spree,CiscoCloud/spree,yushine/spree,keatonrow/spree,groundctrl/spree,njerrywerry/spree,karlitxo/spree,derekluo/spree,azclick/spree,scottcrawford03/solidus,tesserakt/clean_spree,locomotivapro/spree,archSeer/spree,cutefrank/spree,dandanwei/spree,sunny2601/spree,jordan-brough/solidus,ramkumar-kr/spree,edgward/spree,Engeltj/spree,thogg4/spree,azclick/spree,FadliKun/spree,mindvolt/spree,lsirivong/solidus,jaspreet21anand/spree,mindvolt/spree,tomash/spree,madetech/spree,brchristian/spree,yushine/spree,Kagetsuki/spree,thogg4/spree,locomotivapro/spree,lsirivong/solidus,sfcgeorge/spree,jasonfb/spree,builtbybuffalo/spree,alejandromangione/spree,alejandromangione/spree,sideci-sample/sideci-sample-spree,firman/spree,derekluo/spree,zamiang/spree,Kagetsuki/spree,sideci-sample/sideci-sample-spree,KMikhaylovCTG/spree,sunny2601/spree,DarkoP/spree,Machpowersystems/spree_mach,groundctrl/spree,camelmasa/spree,jeffboulet/spree,shaywood2/spree,sfcgeorge/spree,DynamoMTL/spree,yiqing95/spree,gregoryrikson/spree-sample,progsri/spree,jordan-brough/solidus,miyazawatomoka/spree,AgilTec/spree,CJMrozek/spree,NerdsvilleCEO/spree,piousbox/spree,shekibobo/spree,Lostmyname/spree,Kagetsuki/spree,vulk/spree,JuandGirald/spree,scottcrawford03/solidus,locomotivapro/spree,trigrass2/spree,reinaris/spree,robodisco/spree,TimurTarasenko/spree,vinayvinsol/spree,lyzxsc/spree,KMikhaylovCTG/spree,wolfieorama/spree,DarkoP/spree,Boomkat/spree,dafontaine/spree,athal7/solidus,jsurdilla/solidus,thogg4/spree,devilcoders/solidus,ckk-scratch/solidus,ahmetabdi/spree,abhishekjain16/spree,vcavallo/spree,odk211/spree,groundctrl/spree,JDutil/spree,carlesjove/spree,lsirivong/spree,grzlus/solidus,CiscoCloud/spree,degica/spree,pulkit21/spree,gregoryrikson/spree-sample,omarsar/spree,orenf/spree,madetech/spree,volpejoaquin/spree,mleglise/spree,dafontaine/spree,alvinjean/spree,piousbox/spree,welitonfreitas/spree,volpejoaquin/spree,Engeltj/spree,jparr/spree,FadliKun/spree,net2b/spree,shaywood2/spree,priyank-gupta/spree,progsri/spree,fahidnasir/spree,rbngzlv/spree,softr8/spree,berkes/spree,vulk/spree,CJMrozek/spree,welitonfreitas/spree,moneyspyder/spree,siddharth28/spree,DarkoP/spree,jimblesm/spree,piousbox/spree,surfdome/spree,radarseesradar/spree,firman/spree,xuewenfei/solidus,locomotivapro/spree,zaeznet/spree,carlesjove/spree,jsurdilla/solidus,odk211/spree,caiqinghua/spree,pervino/spree,gautamsawhney/spree,priyank-gupta/spree,builtbybuffalo/spree,maybii/spree,ayb/spree,JuandGirald/spree,alejandromangione/spree,volpejoaquin/spree,Boomkat/spree,Lostmyname/spree,JDutil/spree,tomash/spree,adaddeo/spree,TrialGuides/spree,omarsar/spree,Boomkat/spree,progsri/spree,omarsar/spree,mindvolt/spree,dandanwei/spree,edgward/spree,jimblesm/spree,athal7/solidus,CJMrozek/spree,athal7/solidus,zaeznet/spree,siddharth28/spree,jordan-brough/solidus,zamiang/spree,JDutil/spree,orenf/spree,vcavallo/spree,CiscoCloud/spree,rajeevriitm/spree,vcavallo/spree,surfdome/spree,net2b/spree,scottcrawford03/solidus,vinsol/spree,abhishekjain16/spree,Hawaiideveloper/shoppingcart,zamiang/spree,NerdsvilleCEO/spree,project-eutopia/spree,SadTreeFriends/spree,CJMrozek/spree,mleglise/spree,calvinl/spree,lyzxsc/spree,xuewenfei/solidus,caiqinghua/spree,xuewenfei/solidus,lsirivong/spree,radarseesradar/spree,sfcgeorge/spree,rajeevriitm/spree,jaspreet21anand/spree,bricesanchez/spree,dandanwei/spree,lsirivong/spree,pervino/solidus,jaspreet21anand/spree,ramkumar-kr/spree,jordan-brough/solidus,brchristian/spree,lyzxsc/spree,AgilTec/spree,yiqing95/spree,NerdsvilleCEO/spree,dandanwei/spree,siddharth28/spree,quentinuys/spree,grzlus/spree,ramkumar-kr/spree,orenf/spree,shekibobo/spree,devilcoders/solidus,richardnuno/solidus,AgilTec/spree,azclick/spree,sfcgeorge/spree,joanblake/spree,caiqinghua/spree,archSeer/spree,lyzxsc/spree,jimblesm/spree,vinayvinsol/spree,ahmetabdi/spree,SadTreeFriends/spree,net2b/spree,Arpsara/solidus,APohio/spree,berkes/spree,TimurTarasenko/spree,ckk-scratch/solidus,shekibobo/spree,hoanghiep90/spree,Senjai/solidus,bonobos/solidus,calvinl/spree,odk211/spree,AgilTec/spree,pervino/solidus,bonobos/solidus,azranel/spree,karlitxo/spree,quentinuys/spree,hifly/spree,raow/spree,siddharth28/spree,mleglise/spree,piousbox/spree,ramkumar-kr/spree,Engeltj/spree,reidblomquist/spree,grzlus/spree,miyazawatomoka/spree,berkes/spree,DynamoMTL/spree,keatonrow/spree,reinaris/spree,PhoenixTeam/spree_phoenix,ujai/spree,robodisco/spree,nooysters/spree,carlesjove/spree,tesserakt/clean_spree,assembledbrands/spree,ahmetabdi/spree,hoanghiep90/spree,cutefrank/spree,jparr/spree,vinayvinsol/spree,njerrywerry/spree,vulk/spree,madetech/spree,camelmasa/spree,hifly/spree,imella/spree,miyazawatomoka/spree,forkata/solidus,njerrywerry/spree,zaeznet/spree,delphsoft/spree-store-ballchair,NerdsvilleCEO/spree,azclick/spree,Boomkat/spree,vinsol/spree,mleglise/spree,moneyspyder/spree,tesserakt/clean_spree,alejandromangione/spree,moneyspyder/spree,kewaunited/spree,cutefrank/spree,agient/agientstorefront,Engeltj/spree,dafontaine/spree,rakibulislam/spree,forkata/solidus,firman/spree,net2b/spree,useiichi/spree,brchristian/spree,surfdome/spree,pulkit21/spree,reidblomquist/spree,pervino/spree,JuandGirald/spree,FadliKun/spree,calvinl/spree,agient/agientstorefront,jasonfb/spree,jsurdilla/solidus,carlesjove/spree,bricesanchez/spree,vmatekole/spree,pulkit21/spree,TrialGuides/spree,jimblesm/spree,fahidnasir/spree,bonobos/solidus,rbngzlv/spree,edgward/spree,trigrass2/spree,softr8/spree,archSeer/spree,jaspreet21anand/spree,Arpsara/solidus,sunny2601/spree,grzlus/solidus,lsirivong/spree,jeffboulet/spree,joanblake/spree,vinsol/spree,trigrass2/spree,vmatekole/spree,rakibulislam/spree,athal7/solidus,delphsoft/spree-store-ballchair,raow/spree,keatonrow/spree,PhoenixTeam/spree_phoenix,jasonfb/spree,tancnle/spree,zamiang/spree,richardnuno/solidus,beni55/spree,jasonfb/spree,jspizziri/spree,maybii/spree,Migweld/spree,beni55/spree,ayb/spree,jparr/spree,jparr/spree,useiichi/spree,devilcoders/solidus,welitonfreitas/spree,karlitxo/spree,rajeevriitm/spree,gautamsawhney/spree,FadliKun/spree,jsurdilla/solidus,groundctrl/spree,nooysters/spree,orenf/spree,azranel/spree,ckk-scratch/solidus,SadTreeFriends/spree,pervino/solidus,tomash/spree,beni55/spree,sideci-sample/sideci-sample-spree,joanblake/spree,Hawaiideveloper/shoppingcart,beni55/spree,joanblake/spree,richardnuno/solidus,imella/spree,agient/agientstorefront,grzlus/spree,sunny2601/spree,adaddeo/spree,degica/spree,surfdome/spree,trigrass2/spree,ayb/spree,wolfieorama/spree,jeffboulet/spree,Senjai/solidus,KMikhaylovCTG/spree,devilcoders/solidus,lsirivong/solidus,assembledbrands/spree,madetech/spree,project-eutopia/spree,rakibulislam/spree,Hawaiideveloper/shoppingcart,Ropeney/spree,jspizziri/spree,odk211/spree,sliaquat/spree,pulkit21/spree,raow/spree,patdec/spree,nooysters/spree,softr8/spree,Lostmyname/spree,CiscoCloud/spree,ujai/spree,vmatekole/spree,omarsar/spree,useiichi/spree,Ropeney/spree,derekluo/spree,robodisco/spree,karlitxo/spree,nooysters/spree,kewaunited/spree,tesserakt/clean_spree,jspizziri/spree,hifly/spree,sliaquat/spree,PhoenixTeam/spree_phoenix,alvinjean/spree,Lostmyname/spree,shaywood2/spree,azranel/spree,yiqing95/spree,priyank-gupta/spree,moneyspyder/spree,APohio/spree,fahidnasir/spree,raow/spree,shekibobo/spree,gregoryrikson/spree-sample,scottcrawford03/solidus,hoanghiep90/spree,quentinuys/spree,JuandGirald/spree,xuewenfei/solidus,derekluo/spree,patdec/spree,archSeer/spree,dafontaine/spree,brchristian/spree,APohio/spree,Arpsara/solidus,DarkoP/spree,firman/spree,Migweld/spree,welitonfreitas/spree,jspizziri/spree,ahmetabdi/spree,softr8/spree,DynamoMTL/spree,Migweld/spree,rbngzlv/spree,Machpowersystems/spree_mach,agient/agientstorefront,gregoryrikson/spree-sample,tancnle/spree,builtbybuffalo/spree,yushine/spree,calvinl/spree,mindvolt/spree,sliaquat/spree,abhishekjain16/spree,volpejoaquin/spree,useiichi/spree,imella/spree,grzlus/solidus,pervino/spree,delphsoft/spree-store-ballchair,pervino/solidus,ayb/spree,thogg4/spree,vulk/spree,patdec/spree,alvinjean/spree,Senjai/solidus,JDutil/spree,richardnuno/solidus,rbngzlv/spree,PhoenixTeam/spree_phoenix,reidblomquist/spree,maybii/spree,tancnle/spree,TrialGuides/spree,TimurTarasenko/spree,hoanghiep90/spree,edgward/spree,njerrywerry/spree,progsri/spree,caiqinghua/spree,priyank-gupta/spree,ckk-scratch/solidus,keatonrow/spree,kewaunited/spree,kewaunited/spree,APohio/spree,gautamsawhney/spree,TimurTarasenko/spree,KMikhaylovCTG/spree,azranel/spree,vinsol/spree,radarseesradar/spree,shaywood2/spree,Kagetsuki/spree,camelmasa/spree,project-eutopia/spree,vcavallo/spree,pervino/spree,adaddeo/spree,grzlus/solidus,zaeznet/spree,cutefrank/spree,wolfieorama/spree,delphsoft/spree-store-ballchair,hifly/spree,patdec/spree