doubly improve `cf push` help message
doubly improve `cf push` help message

[Finishes #64792314]

diatmpravin/cli,rastasheep/trash-can,saurabhguptasg/cli,ofer43211/cli,saravana76/cli,Zouuup/cli,AmitRoushan/cli,carnell69/cli,cf-routing/cli,hyenaspots/cli,zhang-hua/cli,cgvarela/cli,cgvarela/cli,xingzhou/cli,kavoj/cli,EngineerBetter/cli,xingzhou/cli,18F/cli,nttlabs/cli,mcowger/cli,carnell69/cli,fujitsu-cf/cli,srikanth88infy/cli,xingzhou/cli,saurabhguptasg/cli,kavoj/cli,markstgodard/cli,diatmpravin/cli,mcowger/cli,ReachingOut/cli,nttlabs/cli,mcintyred/cli,rastasheep/trash-can,HuaweiTech/cli,cf-routing/cli,rastasheep/trash-can,saravana76/cli,AmitRoushan/cli,TomG713/cli,cf-routing/cli,pishro-cc/cli,pishro-cc/cli,saurabhguptasg/cli,saravana76/cli,ofer43211/cli,diatmpravin/cli,xingzhou/cli,ReachingOut/cli,ofer43211/cli,kavoj/cli,EngineerBetter/cli,simonleung8/cli,carnell69/cli,saurabhguptasg/cli,SrinivasChilveri/cli,evanfarrar/cli,cgvarela/cli,SrinivasChilveri/cli,nimbus-cloud/cli,hyenaspots/cli,srikanth88infy/cli,pishro-cc/cli,carnell69/cli,18F/cli,EngineerBetter/cli,cf-routing/cli,HuaweiTech/cli,18F/cli,fujitsu-cf/cli,Zouuup/cli,EngineerBetter/cli,saravana76/cli,simonleung8/cli,nimbus-cloud/cli,evanfarrar/cli,zhang-hua/cli,srikanth88infy/cli,simonleung8/cli,nimbus-cloud/cli,kavoj/cli,Zouuup/cli,AmitRoushan/cli,hyenaspots/cli,mcintyred/cli,SrinivasChilveri/cli,markstgodard/cli,TomG713/cli,nttlabs/cli,ReachingOut/cli,diatmpravin/cli,rastasheep/trash-can,ofer43211/cli,hyenaspots/cli,SrinivasChilveri/cli,mcowger/cli,markstgodard/cli,nttlabs/cli,mcowger/cli,evanfarrar/cli,TomG713/cli,Zouuup/cli,evanfarrar/cli,fujitsu-cf/cli,HuaweiTech/cli,HuaweiTech/cli,mcintyred/cli,TomG713/cli,zhang-hua/cli,18F/cli,srikanth88infy/cli,markstgodard/cli,AmitRoushan/cli,ReachingOut/cli,pishro-cc/cli,cgvarela/cli,mcintyred/cli,zhang-hua/cli