Fix a typo
Fix a typo

dible -> disable
Yobota/heroku-buildpack-pgbouncer,agriffis/heroku-buildpack-pgbouncer,Shyp/heroku-buildpack-pgbouncer,rmoorman/heroku-buildpack-pgbouncer,realtymaps/heroku-buildpack-pgbouncer,BetterWorks/heroku-buildpack-pgbouncer,heroku/heroku-buildpack-pgbouncer