* Upgraded node image to latest stable, v8.12 in docker compose * f-strings example with capital letter F * Example of using f-strings with an object * Revert "f-strings example with capital letter F" This reverts commit8f498480ce
. * Revert "Upgraded node image to latest stable, v8.12 in docker compose" This reverts commite55dd116d2
. * feat: fixed header formatting