Fixed the URL
Fixed the URL

Heroku uses the referrer URL to point at the repo that should be deployed; from this page that includes part of a path that breaks the deployment (specifically /blob/master/docs/Running-Mastodon/Heroku-guide.md).

I've replaced the vanilla address with one that includes a specific reference to the root of the repo
h3zjp/mastodon,salvadorpla/mastodon,lindwurm/mastodon,Toootim/mastodon,Craftodon/Craftodon,Kyon0000/mastodon,RobertRence/Mastodon,bureaucracy/mastodon,MitarashiDango/mastodon,RobertRence/Mastodon,8796n/mastodon,masto-donte-com-br/mastodon,ebihara99999/mastodon,cobodo/mastodon,nonoz/mastodon,mosaxiv/mastodon,res-ac/mstdn.res.ac,haleyashleypraesent/ProjectPrionosuchus,rekif/mastodon,h3zjp/mastodon,sinsoku/mastodon,sinsoku/mastodon,infinimatix/infinimatix.net,pfm-eyesightjp/mastodon,imas/mastodon,mosaxiv/mastodon,tcitworld/mastodon,Arukas/mastodon,thor-the-norseman/mastodon,Ryanaka/mastodon,lindwurm/mastodon,h-izumi/mastodon,yukimochi/mastodon,rekif/mastodon,koteitan/googoldon,koteitan/googoldon,PlantsNetwork/mastodon,codl/mastodon,alarky/mastodon,pixiv/mastodon,lynlynlynx/mastodon,WitchesTown/mastodon,Arukas/mastodon,Gargron/mastodon,rutan/mastodon,mstdn-jp/mastodon,tootsuite/mastodon,Nyoho/mastodon,Kyon0000/mastodon,palon7/mastodon,TheInventrix/mastodon,glitch-soc/mastodon,dwango/mastodon,salvadorpla/mastodon,mecab/mastodon,dissolve/mastodon,sylph-sin-tyaku/mastodon,masto-donte-com-br/mastodon,kagucho/mastodon,TootCat/mastodon,h-izumi/mastodon,sylph-sin-tyaku/mastodon,glitch-soc/mastodon,haleyashleypraesent/ProjectPrionosuchus,vahnj/mastodon,pinfort/mastodon,yi0713/mastodon,theoria24/mastodon,bureaucracy/mastodon,pso2club/mastodon,thnkrs/mastodon,unarist/mastodon,Nyoho/mastodon,ashfurrow/mastodon,anon5r/mastonon,clworld/mastodon,palon7/mastodon,TheInventrix/mastodon,vahnj/mastodon,cobodo/mastodon,haleyashleypraesent/ProjectPrionosuchus,blackle/mastodon,cybrespace/mastodon,SerCom-KC/mastodon,ykzts/mastodon,foozmeat/mastodon,ikuradon/mastodon,koba-lab/mastodon,librize/mastodon,mecab/mastodon,yi0713/mastodon,hugogameiro/mastodon,Gargron/mastodon,dunn/mastodon,esetomo/mastodon,yukimochi/mastodon,Chronister/mastodon,robotstart/mastodon,imomix/mastodon,foozmeat/mastodon,Monappy/mastodon,unarist/mastodon,dunn/mastodon,ebihara99999/mastodon,rutan/mastodon,clworld/mastodon,RobertRence/Mastodon,kazh98/social.arnip.org,d6rkaiz/mastodon,mosaxiv/mastodon,Chronister/mastodon,d6rkaiz/mastodon,3846masa/mastodon,h-izumi/mastodon,bureaucracy/mastodon,kazh98/social.arnip.org,pixiv/mastodon,sylph-sin-tyaku/mastodon,PlantsNetwork/mastodon,3846masa/mastodon,primenumber/mastodon,palon7/mastodon,kirakiratter/mastodon,Arukas/mastodon,Kirishima21/mastodon,theoria24/mastodon,3846masa/mastodon,HogeTatu/mastodon,heropunch/mastodon-ce,NS-Kazuki/mastodon,mosaxiv/mastodon,danhunsaker/mastodon,tri-star/mastodon,YuyaYokosuka/mastodon_animeclub,dunn/mastodon,8796n/mastodon,masarakki/mastodon,alimony/mastodon,tootsuite/mastodon,ms2sato/mastodon,ashfurrow/mastodon,maa123/mastodon,cybrespace/mastodon,verniy6462/mastodon,amazedkoumei/mastodon,kirakiratter/mastodon,WitchesTown/mastodon,foozmeat/mastodon,lynlynlynx/mastodon,ineffyble/mastodon,riku6460/chikuwagoddon,res-ac/mstdn.res.ac,rainyday/mastodon,summoners-riftodon/mastodon,anon5r/mastonon,cybrespace/mastodon,mhffdq/mastodon,tootcafe/mastodon,thnkrs/mastodon,danhunsaker/mastodon,Craftodon/Craftodon,danhunsaker/mastodon,saggel/mastodon,blackle/mastodon,gol-cha/mastodon,rutan/mastodon,clworld/mastodon,Toootim/mastodon,Kyon0000/mastodon,vahnj/mastodon,masarakki/mastodon,vahnj/mastodon,robotstart/mastodon,KnzkDev/mastodon,narabo/mastodon,summoners-riftodon/mastodon,riku6460/chikuwagoddon,mhffdq/mastodon,im-in-space/mastodon,masto-donte-com-br/mastodon,ambition-vietnam/mastodon,musashino205/mastodon,imomix/mastodon,ambition-vietnam/mastodon,cobodo/mastodon,sinsoku/mastodon,dunn/mastodon,PlantsNetwork/mastodon,koteitan/googoldon,honpya/taketodon,heropunch/mastodon-ce,mstdn-jp/mastodon,ms2sato/mastodon,ambition-vietnam/mastodon,tri-star/mastodon,WitchesTown/mastodon,imas/mastodon,h3zjp/mastodon,ebihara99999/mastodon,danhunsaker/mastodon,hugogameiro/mastodon,mstdn-jp/mastodon,abcang/mastodon,primenumber/mastodon,tootsuite/mastodon,d6rkaiz/mastodon,Chronister/mastodon,rutan/mastodon,Ryanaka/mastodon,musashino205/mastodon,masarakki/mastodon,gol-cha/mastodon,honpya/taketodon,ineffyble/mastodon,5thfloor/ichiji-social,corzntin/mastodon,dissolve/mastodon,tootcafe/mastodon,h3zjp/mastodon,SerCom-KC/mastodon,TootCat/mastodon,verniy6462/mastodon,MitarashiDango/mastodon,musashino205/mastodon,pointlessone/mastodon,MastodonCloud/mastodon,nonoz/mastodon,haleyashleypraesent/ProjectPrionosuchus,ykzts/mastodon,salvadorpla/mastodon,d6rkaiz/mastodon,TheInventrix/mastodon,pointlessone/mastodon,kazh98/social.arnip.org,HogeTatu/mastodon,salvadorpla/mastodon,unarist/mastodon,ineffyble/mastodon,amazedkoumei/mastodon,rainyday/mastodon,dissolve/mastodon,tcitworld/mastodon,SerCom-KC/mastodon,tateisu/mastodon,mstdn-jp/mastodon,SerCom-KC/mastodon,im-in-space/mastodon,cobodo/mastodon,MastodonCloud/mastodon,jukper/mastodon,mecab/mastodon,vahnj/mastodon,codl/mastodon,koba-lab/mastodon,moeism/mastodon,3846masa/mastodon,kagucho/mastodon,amazedkoumei/mastodon,Toootim/mastodon,imas/mastodon,ashfurrow/mastodon,saggel/mastodon,tateisu/mastodon,foozmeat/mastodon,yi0713/mastodon,lindwurm/mastodon,ashfurrow/mastodon,honpya/taketodon,pointlessone/mastodon,pfm-eyesightjp/mastodon,tri-star/mastodon,musashino205/mastodon,rekif/mastodon,amazedkoumei/mastodon,pinfort/mastodon,hyuki0000/mastodon,rainyday/mastodon,mimumemo/mastodon,glitch-soc/mastodon,TheInventrix/mastodon,masarakki/mastodon,cybrespace/mastodon,nonoz/mastodon,kazh98/social.arnip.org,thor-the-norseman/mastodon,tcitworld/mastodon,pixiv/mastodon,dwango/mastodon,Monappy/mastodon,alarky/mastodon,abcang/mastodon,Gargron/mastodon,havicon/mastodon,abcang/mastodon,ykzts/mastodon,blackle/mastodon,glitch-soc/mastodon,Craftodon/Craftodon,increments/mastodon,lindwurm/mastodon,dwango/mastodon,Toootim/mastodon,corzntin/mastodon,librize/mastodon,tootcafe/mastodon,alimony/mastodon,HogeTatu/mastodon,pfm-eyesightjp/mastodon,res-ac/mstdn.res.ac,5thfloor/ichiji-social,Kirishima21/mastodon,mimumemo/mastodon,imas/mastodon,TheInventrix/mastodon,thnkrs/mastodon,verniy6462/mastodon,pinfort/mastodon,tri-star/mastodon,Nyoho/mastodon,moeism/mastodon,esetomo/mastodon,RobertRence/Mastodon,tootcafe/mastodon,yukimochi/mastodon,primenumber/mastodon,honpya/taketodon,Arukas/mastodon,alimony/mastodon,8796n/mastodon,KnzkDev/mastodon,MastodonCloud/mastodon,increments/mastodon,TootCat/mastodon,hugogameiro/mastodon,unarist/mastodon,infinimatix/infinimatix.net,codl/mastodon,YuyaYokosuka/mastodon_animeclub,h-izumi/mastodon,kirakiratter/mastodon,5thfloor/ichiji-social,YuyaYokosuka/mastodon_animeclub,im-in-space/mastodon,pointlessone/mastodon,PlantsNetwork/mastodon,pinfort/mastodon,ikuradon/mastodon,developer-mstdn18/mstdn18,jukper/mastodon,masto-donte-com-br/mastodon,Monappy/mastodon,theoria24/mastodon,gol-cha/mastodon,dwango/mastodon,Kirishima21/mastodon,yukimochi/mastodon,ms2sato/mastodon,verniy6462/mastodon,pfm-eyesightjp/mastodon,robotstart/mastodon,gol-cha/mastodon,maa123/mastodon,corzntin/mastodon,mimumemo/mastodon,riku6460/chikuwagoddon,mhffdq/mastodon,ikuradon/mastodon,Craftodon/Craftodon,saggel/mastodon,imomix/mastodon,rainyday/mastodon,ykzts/mastodon,YuyaYokosuka/mastodon_animeclub,nonoz/mastodon,riku6460/chikuwagoddon,MastodonCloud/mastodon,thor-the-norseman/mastodon,havicon/mastodon,pixiv/mastodon,palon7/mastodon,blackle/mastodon,infinimatix/infinimatix.net,ikuradon/mastodon,Ryanaka/mastodon,KnzkDev/mastodon,codl/mastodon,pso2club/mastodon,anon5r/mastonon,5thfloor/ichiji-social,Ryanaka/mastodon,Nyoho/mastodon,kagucho/mastodon,koba-lab/mastodon,increments/mastodon,summoners-riftodon/mastodon,mhffdq/mastodon,alarky/mastodon,corzntin/mastodon,koba-lab/mastodon,increments/mastodon,pso2club/mastodon,developer-mstdn18/mstdn18,hugogameiro/mastodon,pso2club/mastodon,koteitan/googoldon,jukper/mastodon,tateisu/mastodon,res-ac/mstdn.res.ac,Kirishima21/mastodon,lynlynlynx/mastodon,narabo/mastodon,NS-Kazuki/mastodon,NS-Kazuki/mastodon,kirakiratter/mastodon,yi0713/mastodon,maa123/mastodon,tateisu/mastodon,hyuki0000/mastodon,lynlynlynx/mastodon,im-in-space/mastodon,NS-Kazuki/mastodon,developer-mstdn18/mstdn18,primenumber/mastodon,esetomo/mastodon,ambition-vietnam/mastodon,WitchesTown/mastodon,summoners-riftodon/mastodon,havicon/mastodon,heropunch/mastodon-ce,moeism/mastodon,imomix/mastodon,kagucho/mastodon,tootsuite/mastodon,MitarashiDango/mastodon,abcang/mastodon,sylph-sin-tyaku/mastodon,mecab/mastodon,MitarashiDango/mastodon,ebihara99999/mastodon,Monappy/mastodon,anon5r/mastonon,KnzkDev/mastodon,mimumemo/mastodon,narabo/mastodon,hyuki0000/mastodon,rekif/mastodon,maa123/mastodon,narabo/mastodon,hyuki0000/mastodon,clworld/mastodon,TootCat/mastodon,esetomo/mastodon,Chronister/mastodon,alarky/mastodon,theoria24/mastodon,librize/mastodon