Update documentation for setting up database tests (#37475)
Update documentation for setting up database tests (#37475)

[ci skip]
Erol/rails,esparta/rails,yawboakye/rails,eileencodes/rails,Envek/rails,tgxworld/rails,notapatch/rails,schuetzm/rails,yawboakye/rails,lcreid/rails,tjschuck/rails,Stellenticket/rails,yhirano55/rails,rafaelfranca/omg-rails,mechanicles/rails,kddeisz/rails,MSP-Greg/rails,vipulnsward/rails,prathamesh-sonpatki/rails,yhirano55/rails,fabianoleittes/rails,eileencodes/rails,repinel/rails,schuetzm/rails,schuetzm/rails,joonyou/rails,BlakeWilliams/rails,yahonda/rails,georgeclaghorn/rails,notapatch/rails,joonyou/rails,rafaelfranca/omg-rails,iainbeeston/rails,lcreid/rails,fabianoleittes/rails,Stellenticket/rails,vipulnsward/rails,Vasfed/rails,bogdanvlviv/rails,yalab/rails,jeremy/rails,MSP-Greg/rails,schuetzm/rails,yahonda/rails,tgxworld/rails,starknx/rails,notapatch/rails,kmcphillips/rails,esparta/rails,yawboakye/rails,BlakeWilliams/rails,BlakeWilliams/rails,yawboakye/rails,yalab/rails,prathamesh-sonpatki/rails,Edouard-chin/rails,Vasfed/rails,Edouard-chin/rails,fabianoleittes/rails,yahonda/rails,betesh/rails,starknx/rails,eileencodes/rails,kmcphillips/rails,prathamesh-sonpatki/rails,tjschuck/rails,notapatch/rails,Vasfed/rails,lcreid/rails,joonyou/rails,gauravtiwari/rails,georgeclaghorn/rails,repinel/rails,tjschuck/rails,Edouard-chin/rails,prathamesh-sonpatki/rails,palkan/rails,rails/rails,BlakeWilliams/rails,MSP-Greg/rails,gauravtiwari/rails,gauravtiwari/rails,betesh/rails,rails/rails,palkan/rails,mechanicles/rails,jeremy/rails,Envek/rails,rails/rails,kmcphillips/rails,yhirano55/rails,bogdanvlviv/rails,vipulnsward/rails,yhirano55/rails,iainbeeston/rails,kddeisz/rails,repinel/rails,kddeisz/rails,lcreid/rails,EmmaB/rails-1,palkan/rails,Stellenticket/rails,betesh/rails,esparta/rails,iainbeeston/rails,starknx/rails,tgxworld/rails,rails/rails,georgeclaghorn/rails,vipulnsward/rails,EmmaB/rails-1,Vasfed/rails,yalab/rails,jeremy/rails,mechanicles/rails,repinel/rails,esparta/rails,rafaelfranca/omg-rails,Erol/rails,Envek/rails,Envek/rails,bogdanvlviv/rails,joonyou/rails,Erol/rails,kmcphillips/rails,EmmaB/rails-1,Stellenticket/rails,yalab/rails,tjschuck/rails,kddeisz/rails,georgeclaghorn/rails,bogdanvlviv/rails,jeremy/rails,Erol/rails,eileencodes/rails,tgxworld/rails,palkan/rails,yahonda/rails,Edouard-chin/rails,mechanicles/rails,betesh/rails,fabianoleittes/rails,iainbeeston/rails,MSP-Greg/rails