Replace hardcoded lock with var
Replace hardcoded lock with var

Fixes https://github.com/auth0/docs/issues/2600
sandrinodimattia/docs,jeffreylees/docs,Annyv2/docs,yvonnewilson/docs,jeffreylees/docs,yvonnewilson/docs,khorne3/docs,hamzawi06/docs,yvonnewilson/docs,auth0/docs,sandrinodimattia/docs,Annyv2/docs,khorne3/docs,khorne3/docs,jeffreylees/docs,auth0/docs,hamzawi06/docs,sandrinodimattia/docs,auth0/docs,hamzawi06/docs,Annyv2/docs