add instructions for Replay

[kevinburke1]

How do I invalidate the saved replays or update them, etc.

(Trying to add IP address and MAC address to one of the tests to ensure that everything works end to end)

[kyleconroy]

If you're just updating a single test, run sqlc in the test directory that you changed. I suggest building and installing a sqlc-dev binary that doesn't overwrite the sqlc you've installed locally.

go build -o ~/go/bin/sqlc-dev ./cmd/sqlc
cd internal/endtoend/testdata/name
sqlc-dev generate