Add note about #26929 in the upgrade guide
Add note about #26929 in the upgrade guide

This is a small breaking change that we chose to make in 5.1 since the
fix can be done with a search and replace tool.

flanger001/rails,gfvcastro/rails,mechanicles/rails,MSP-Greg/rails,fabianoleittes/rails,yalab/rails,lucasmazza/rails,fabianoleittes/rails,ledestin/rails,bogdanvlviv/rails,odedniv/rails,hanystudy/rails,tjschuck/rails,kddeisz/rails,yalab/rails,joonyou/rails,Envek/rails,ttanimichi/rails,felipecvo/rails,illacceptanything/illacceptanything,illacceptanything/illacceptanything,kamipo/rails,Vasfed/rails,pvalena/rails,lcreid/rails,arunagw/rails,fabianoleittes/rails,illacceptanything/illacceptanything,EmmaB/rails-1,iainbeeston/rails,palkan/rails,palkan/rails,georgeclaghorn/rails,ngpestelos/rails,printercu/rails,rails/rails,flanger001/rails,koic/rails,assain/rails,lcreid/rails,lcreid/rails,yawboakye/rails,ttanimichi/rails,schuetzm/rails,felipecvo/rails,mechanicles/rails,Envek/rails,printercu/rails,ngpestelos/rails,rafaelfranca/omg-rails,esparta/rails,brchristian/rails,vipulnsward/rails,gfvcastro/rails,yhirano55/rails,ledestin/rails,yawboakye/rails,Edouard-chin/rails,illacceptanything/illacceptanything,untidy-hair/rails,notapatch/rails,Stellenticket/rails,MSP-Greg/rails,kmcphillips/rails,ttanimichi/rails,Edouard-chin/rails,georgeclaghorn/rails,aditya-kapoor/rails,Erol/rails,travisofthenorth/rails,jeremy/rails,schuetzm/rails,matrinox/rails,travisofthenorth/rails,pschambacher/rails,eileencodes/rails,jeremy/rails,xlymian/rails,jeremy/rails,deraru/rails,mijoharas/rails,EmmaB/rails-1,yalab/rails,bogdanvlviv/rails,Stellenticket/rails,yhirano55/rails,lucasmazza/rails,gfvcastro/rails,kmcphillips/rails,esparta/rails,Sen-Zhang/rails,odedniv/rails,georgeclaghorn/rails,notapatch/rails,notapatch/rails,rails/rails,gauravtiwari/rails,pvalena/rails,assain/rails,arunagw/rails,betesh/rails,arunagw/rails,fabianoleittes/rails,gauravtiwari/rails,kmcphillips/rails,yawboakye/rails,illacceptanything/illacceptanything,xlymian/rails,felipecvo/rails,rails/rails,kddeisz/rails,BlakeWilliams/rails,rossta/rails,assain/rails,kaspth/rails,Erol/rails,mathieujobin/reduced-rails-for-travis,eileencodes/rails,shioyama/rails,travisofthenorth/rails,alecspopa/rails,Sen-Zhang/rails,Edouard-chin/rails,utilum/rails,untidy-hair/rails,BlakeWilliams/rails,alecspopa/rails,aditya-kapoor/rails,MSP-Greg/rails,vipulnsward/rails,matrinox/rails,shioyama/rails,Sen-Zhang/rails,kirs/rails-1,yalab/rails,riseshia/railsguides.kr,gauravtiwari/rails,Vasfed/rails,pvalena/rails,starknx/rails,Stellenticket/rails,gcourtemanche/rails,eileencodes/rails,riseshia/railsguides.kr,hanystudy/rails,tjschuck/rails,aditya-kapoor/rails,iainbeeston/rails,gcourtemanche/rails,yasslab/railsguides.jp,illacceptanything/illacceptanything,gfvcastro/rails,rails/rails,BlakeWilliams/rails,illacceptanything/illacceptanything,utilum/rails,yhirano55/rails,betesh/rails,baerjam/rails,notapatch/rails,maicher/rails,rafaelfranca/omg-rails,odedniv/rails,deraru/rails,mijoharas/rails,baerjam/rails,maicher/rails,repinel/rails,xlymian/rails,iainbeeston/rails,betesh/rails,mijoharas/rails,kddeisz/rails,assain/rails,prathamesh-sonpatki/rails,illacceptanything/illacceptanything,tgxworld/rails,prathamesh-sonpatki/rails,kamipo/rails,tjschuck/rails,MSP-Greg/rails,mohitnatoo/rails,aditya-kapoor/rails,starknx/rails,palkan/rails,utilum/rails,kirs/rails-1,tgxworld/rails,arunagw/rails,mohitnatoo/rails,bradleypriest/rails,schuetzm/rails,mohitnatoo/rails,yhirano55/rails,Edouard-chin/rails,rafaelfranca/omg-rails,baerjam/rails,baerjam/rails,shioyama/rails,mechanicles/rails,iainbeeston/rails,printercu/rails,kaspth/rails,brchristian/rails,flanger001/rails,bradleypriest/rails,mechanicles/rails,tgxworld/rails,koic/rails,palkan/rails,pschambacher/rails,illacceptanything/illacceptanything,deraru/rails,kaspth/rails,printercu/rails,kirs/rails-1,prathamesh-sonpatki/rails,untidy-hair/rails,prathamesh-sonpatki/rails,tgxworld/rails,vipulnsward/rails,yasslab/railsguides.jp,brchristian/rails,betesh/rails,ledestin/rails,Erol/rails,illacceptanything/illacceptanything,yasslab/railsguides.jp,BlakeWilliams/rails,rossta/rails,esparta/rails,schuetzm/rails,kddeisz/rails,joonyou/rails,repinel/rails,hanystudy/rails,utilum/rails,untidy-hair/rails,pschambacher/rails,georgeclaghorn/rails,yasslab/railsguides.jp,matrinox/rails,Stellenticket/rails,kmcphillips/rails,kmayer/rails,mathieujobin/reduced-rails-for-travis,vipulnsward/rails,Erol/rails,yahonda/rails,bradleypriest/rails,koic/rails,yahonda/rails,illacceptanything/illacceptanything,bogdanvlviv/rails,shioyama/rails,riseshia/railsguides.kr,Envek/rails,lcreid/rails,eileencodes/rails,Envek/rails,gcourtemanche/rails,pvalena/rails,travisofthenorth/rails,mohitnatoo/rails,illacceptanything/illacceptanything,mathieujobin/reduced-rails-for-travis,yahonda/rails,kmayer/rails,repinel/rails,alecspopa/rails,bogdanvlviv/rails,riseshia/railsguides.kr,jeremy/rails,illacceptanything/illacceptanything,joonyou/rails,yahonda/rails,EmmaB/rails-1,lucasmazza/rails,flanger001/rails,repinel/rails,joonyou/rails,kamipo/rails,yawboakye/rails,illacceptanything/illacceptanything,ngpestelos/rails,rossta/rails,illacceptanything/illacceptanything,starknx/rails,tjschuck/rails,deraru/rails,esparta/rails,maicher/rails,Vasfed/rails,kmayer/rails,Vasfed/rails