Fix broken rdoc for UrlHelper [ci skip]
Fix broken rdoc for UrlHelper [ci skip]

* Fix unintentionally linked String, Symbol, Hash, and ERB.
* Fix unintentionally code block.

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