Remove incorrect instruction to append with `Id`
Remove incorrect instruction to append with `Id`

The model name should no longer be appended with Id, and this is reflected in the example code but not in the text.
papilip/emberjs-guides-french,constantm/guides,sohara/guides,ubuntuvim/guides,timrosenblatt/guides,mendeza428/guides,sajt/guides,jmeas/guides,eoinkelly/guides,toranb/guides,andrewstarks/guides,mikzar/guides,thoughtbot/ember-guides,gerry3/guides,zacharywelch/guides,ofridagan/guides,ear/guides,Kuzirashi/guides,dgeb/guides,elwayman02/guides,skaterdav85/guides,jkarsrud/guides,kublaj/guides,SaladFork/emberjs-guides,rengokantai/guides,benoittgt/guides,misfo/guides,szines/guides,greyhwndz/guides,SERVANT14/guides,MarkMT/guides,ankushagarwal/guides,mendeza428/guides,ericdouglas/guides,MarkMT/guides,ericdouglas/guides,BigGillyStyle/guides,skaterdav85/guides,jcagener/guides,skaterdav85/guides,sohara/guides,misfo/guides,kagemusha/guides,davidpett/guides,coffeejunk/guides,kevinkucharczyk/guides,mcfiredrill/guides,mitchlloyd/guides,BigGillyStyle/guides,jjhampton/guides,thoughtbot/ember-guides,zacharywelch/guides,aceofspades/guides,lunnaris/guides,talhaobject90/guides,omni5cience/guides,constantm/guides,balupton/guides,RalfWeinand/guides,alexspeller/guides,bmac/guides,mattmcmanus/guides,jdhines/guides,jmurphyau/guides,HeroicEric/guides,Kuzirashi/guides,balupton/guides,joostdevries/guides,ankushagarwal/guides,alexspeller/guides,gerry3/guides,thoughtbot/ember-guides,kagemusha/guides,Lxrd-AJ/guides,mikzar/guides,MSch/guides,jjhampton/guides,jcagener/guides,SaladFork/emberjs-guides,ksin/guides,HeroicEric/guides,grapho/guides,jackfranklin/guides,vikram7/guides,villeneuve-michael/guides,josephchappell/guides,davidpett/guides,ksin/guides,ear/guides,cyjia/guides,benoittgt/guides,Lxrd-AJ/guides,vikram7/guides,jkarsrud/guides,benjaminokeefe/guides,mattmcmanus/guides,josenberg/guides,tleskin/guides,toranb/guides,anthias/guides,boztek/guides,tleskin/guides,MSch/guides,gerry3/guides,andrewstarks/guides,odarbelaeze/guides,thriqon/guides,jdhines/guides,tildeio/guides,toranb/guides,kublaj/guides,rengokantai/guides,talhaobject90/guides,zacharywelch/guides,vikram7/guides,gpluta/guides,palerdot/guides,balinterdi/guides,josenberg/guides,thriqon/guides,kellywerks/guides,JKGisMe/guides,tleskin/guides,mcfiredrill/guides,kagemusha/guides,nicobot/guides,skaterdav85/guides,josephchappell/guides,richardkalehoff/guides,TRMW/guides,boztek/guides,tildeio/guides,grapho/guides,poteto/guides,papilip/emberjs-guides-french,ksin/guides,ofridagan/guides,jdhines/guides,gregzx/guides,xymbol/guides,joostdevries/guides,richardkalehoff/guides,jackfranklin/guides,RalfWeinand/guides,joostdevries/guides,earthrid/guides,MarkMT/guides,poteto/guides,mikzar/guides,rengokantai/guides,bmac/guides,ankushagarwal/guides,Patsy-issa/guides,josephchappell/guides,tildeio/guides,odarbelaeze/guides,omni5cience/guides,jkarsrud/guides,RalfWeinand/guides,omni5cience/guides,mitchlloyd/guides,foxnewsnetwork/guides,kellywerks/guides,mendeza428/guides,webPapaya/guides,benoittgt/guides,Kuzirashi/guides,webPapaya/guides,sohara/guides,JKGisMe/guides,cyjia/guides,greyhwndz/guides,villeneuve-michael/guides,davidpett/guides,szines/guides,knownasilya/guides,HeroicEric/guides,misfo/guides,gregzx/guides,alexspeller/guides,webPapaya/guides,Joelkang/guides,aceofspades/guides,BigGillyStyle/guides,Joelkang/guides,kublaj/guides,MarkMT/guides,greyhwndz/guides,coffeejunk/guides,danielgynn/guides,ericdouglas/guides,villeneuve-michael/guides,coffeejunk/guides,thriqon/guides,kellywerks/guides,dgeb/guides,jjhampton/guides,szines/guides,ofridagan/guides,josenberg/guides,palerdot/guides,SERVANT14/guides,nicobot/guides,knownasilya/guides,ubuntuvim/guides,Joelkang/guides,Lxrd-AJ/guides,jmeas/guides,knownasilya/guides,jmurphyau/guides,poteto/guides,constantm/guides,jmeas/guides,lunnaris/guides,gpluta/guides,Patsy-issa/guides,dgeb/guides,timrosenblatt/guides,kevinkucharczyk/guides,jcagener/guides,odarbelaeze/guides,TRMW/guides,danielgynn/guides,cyjia/guides,benjaminokeefe/guides,ear/guides,earthrid/guides,balinterdi/guides,timrosenblatt/guides,eoinkelly/guides,knownasilya/guides,bmac/guides,lunnaris/guides,danielgynn/guides,elwayman02/guides,jackfranklin/guides,kevinkucharczyk/guides,MSch/guides,earthrid/guides,jmurphyau/guides,boztek/guides,balinterdi/guides,balupton/guides,ubuntuvim/guides,richardkalehoff/guides,xymbol/guides,benjaminokeefe/guides,foxnewsnetwork/guides,bmac/guides,xymbol/guides,mallikarjunayaddala/guides,SaladFork/emberjs-guides,mallikarjunayaddala/guides,TRMW/guides,mallikarjunayaddala/guides,JKGisMe/guides,SERVANT14/guides,jkarsrud/guides,aceofspades/guides,gpluta/guides,sajt/guides,palerdot/guides,mattmcmanus/guides,anthias/guides,papilip/emberjs-guides-french,talhaobject90/guides,gregzx/guides,foxnewsnetwork/guides,andrewstarks/guides,davidpett/guides,eoinkelly/guides,sajt/guides,Patsy-issa/guides,anthias/guides,mcfiredrill/guides,elwayman02/guides,mitchlloyd/guides,nicobot/guides,ubuntuvim/guides,grapho/guides